Appendix B - I/O Board Data Sheets

HSQ's Model 1046 8 Channel DC Input Board offers 8 digital inputs from DC control circuits to the RTU. Each input is optically isolated and provides RC noise filtering. LEDs indicate the status of current operations. The 1046 connects to the RTU microcomputer system via ribbon cable and can be used in combination with other input/output termination boards to satisfy specific job requirements.

HSQ 1046 Specifications
· Channels	8 per board with LED display
· Connections	Plug in type barrier terminal block with screw terminals for up to 12 AWG wire
· Optical Isolation	2500Vac rms between field and logic circuits
· Input	DI 9-32Vdc
· Power	+5Vdc at 2.0 mA maximum per channel For +12Vdc DI current 6.2 mA maximum per channel For +24Vdc DI current 3.0 mA maximum per channel
· Environment	0 to 60_C, operating temperature -20 to 85_C, storage temperature 5 to 95% RH, non-condensing
· Dimensions	7.25" L x 3.50" W x 1.00" H Approximately 5 ounces

HSQ Technology
1435 Huntington Avenue
South San Francisco, CA 94080-5999
(650) 952-4310 FAX (650) 952-7206

HSQ Model 1047
8 Channel DC Output Board

HSQ's Model 1047 8 Channel DC Output Board offers 8 digital outputs from DC control circuits to the RTU. Each output is optically isolated. LEDs indicate the status of current operations. The 1047 connects to the RTU microcomputer system via ribbon cable and can be used in combination with other input/output termination boards to satisfy specific job requirements.

HSQ 1047 Specifications
· Channels	8 per board with LED display
· Connections	Plug in type barrier terminal block with screw terminals for up to 12 AWG wire
· Optical Isolation	2500Vac rms between field and logic circuits
· Output	9-32Vdc 200 mA maximium
· Power	+5Vdc at 10 mA maximum per channel 9-32Vdc at 200 mA maximum per channel
· Environment	0 to 60_C, operating temperature -20 to 85_C, storage temperature 5 to 95% RH, non-condensing
· Dimensions	7.25" L x 3.50" W x 1.00" H Approximately 5 ounces

HSQ Technology
1435 Huntington Avenue
South San Francisco, CA 94080-5999
(650) 952-4310 FAX (650) 952-7206

HSQ Model 1332
8 Channel Relay Output Board

HSQ's Model 1332 8 Channel Relay Output Board features 8 Form C contact circuits for the RTU. LEDs indicate the status of current operations. The 1332 connects to the RTU microcomputer system via ribbon cable and can be used in combination with other input/output termination boards to satisfy specific job requirements. The 1332 is available as a 12 Vdc or 24 Vdc relay coil version.

HSQ 1332 Specifications
· Channels	8 relays per board, each with Form C contacts and an LED
· Connections	Plug in type terminal block with screw terminals for wire up to 12 AWG
· Isolation	2500Vac rms between field and logic circuits
· Output Rating	10A maximum at 28Vdc or 240Vac, resistive Other ranges available upon request
· Power	+5Vdc at 1.1 mA maximum per channel +12Vdc version 87 mA maximum per channel +24Vdc version 40 mA maximum per channel
· Environment	0 to 60_C, operating temperature -20 to 85_C, storage temperature 5 to 95% RH, non-condensing
· Dimensions	7.25" L x 3.50" W x 1.25" H Approximately 5 ounces

HSQ Technology
1435 Huntington Avenue
South San Francisco, CA 94080-5999
(650) 952-4310 FAX (650) 952-7206

HSQ Model 1351
Digital Input Termination Board

HSQ's Model 1351 Digital Input Termination Board offers 8 digital inputs from AC control circuits to the RTU. Each input is optically isolated and provides RC noise filtering. LEDs indicate the status of current operations. The 1351 connects to the RTU microcomputer system via ribbon cable and can be used in combination with other input/output termination boards to satisfy specific job requirements.

HSQ 1351 Specifications
· Channels	8 per board with LED display
· Connections	Plug in type barrier terminal block with screw terminals for up to 12 AWG wire
· Optical Isolation	2500Vac rms between field and logic circuits
· Input Range	120Vac or 24Vac standard Other ranges available upon request
· Power	+5Vdc at 2.0 mA maximum per channel
· Environment	0 to 60_C, operating temperature -20 to 85_C, storage temperature 5 to 95% RH, non-condensing
· Dimensions	7.25" L x 3.50" W x 1.25" H Approximately 5 ounces

HSQ Technology
1435 Huntington Avenue
South San Francisco, CA 94080-5999
(650) 952-4310 FAX (650) 952-7206

HSQ Model 1354
Asynchronous 202DL Modem

HSQ's Model 1354 Asynchronous 202DL Modem is a low cost, asynchronous, Bell 202 compatible modem for use over dedicated lines and radio frequencies. It is available as a PC board which can be mounted with stand-offs. The 1354 can be used with HSQ 2500 Series Remote Terminal Units and 25x86 Series Logic Processors.
The 1354 operates at speeds of up to 1200 bps over 2-wire or 4-wire unconditioned lines. It accepts input signals at RS-232 or TTL levels. The optically isolated output signal line can control a transmitter for RF applications.

HSQ 1354 Specifications
· Input	Voltage: +24Vdc (+12Vdc optional) Current: Less than 200 mA at 24Vdc
· Input Impedance	600 ohms (150 optional)
· Receiver Sensitivity	+10 dBm to -25 dBm
· Carrier Detect	Threshold: +10 to -25 dBm, adjustable Delay: 12 ms
· Output	Impedance: 600 ohms (150 optional) Level: +5 dBm to -35 dBm, adjustable Frequency: _5 % of carrier
· Carrier Mode	Constant or controlled RTS
· Modulation	FSK, 1200Hz mark; 2200Hz space
· Transient Protection	7V minimum stand-off 12V maximum clamping (40A peak amplitude, 10 x 100ms pulse)
· Environment	0 to 60°C, operating temperature 5 to 95% RH, non-condensing
· Interconnects	Power/line: Plug in type, screw terminal block Signal: 25 pin RS-232 standard
· Indicator LEDs	Receive Data; Transmit Data; Carrier Detect; Request to send
· Dimensions	4" L x 6" W x 1" H

HSQ Technology
1435 Huntington Avenue
South San Francisco, CA 94080-5999
(650) 952-4310 FAX (650) 952-7206

HSQ Model 1357
8 Channel Digital Input Board

HSQ's Model 1357 Digital Input Board offers 8 digital inputs from DC control circuits to the RTU. Each input is optically isolated and provides RC noise filtering, and may be electrically disconnected by the on-board knifeswitch type terminal block. LEDs indicate the status of current operations. The 1357 connects to the RTU microcomputer system via ribbon cable and can be used in combination with other input/output termination boards to satisfy specific job requirements.

HSQ 1357 Specifications
· Channels	8 individually isolated channels per board with LEDs; Knifeswitch disconnect terminal blocks, with screw terminals for 16 AWG, and spacing to withstand 500V
· Optical Isolation	2500Vac rms between field and logic circuits
· Input Range	24Vdc and 125Vdc Other ranges available upon request
· Power	+24Vdc or 125Vdc at 6.2 mA maximum per channel +5Vdc at 2.0 mA maximum per channel
· Input Power	Plug in type barrier terminal block with screw terminals for 12 to 18 AWG wire
· Environment	0 to 60_C, operating temperature -20 to 85_C, storage temperature 5 to 95% RH, non-condensing
· Dimensions	7.25" L x 3.50" W x 1.00" H Approximately 10 ounces

HSQ Technology
1435 Huntington Avenue
South San Francisco, CA 94080-5999
(650) 952-4310 FAX (650) 952-7206

HSQ Model 2507
Analog Output Expansion Board

HSQ's Model 2507 Analog Output Expansion Board offers 4 optically isolated 4 to 20mA analog outputs using 12 bit digital to analog converters. The 2507 can be addressed and read by HSQ's Model 2500 Remote Terminal Unit and controlled through that unit's expansion bus.
The 2507 maintains output current on command for as long as analog output power is maintained (ouputs source 4mA on power up). Loss and re-application of RTU power does not disturb the output level. Open circuit and surge protection are provided at all outputs.

HSQ 2507 Specifications
· Channels	One to 4 per board, each drives 500 ohms (maximum)
· Connections	Outputs - Plug-in/pull-out terminal blocks, no rewiring Power Input - Plug-in/pull-out terminal blocks, no rewiring Expansion Bus - 50 pin header
· Optical Isolation	1500Vdc continuous between outputs 1500Vdc between field and logic circuits
· Power	Analog Output: 20 to 30Vdc (24V nominal) 20 mA per channel maximum Logic System: 20 to 30Vdc, 150mA at 24V nominal (350 mA maximum)
· Environment	0 - 60°C, operating temperature 10 to 90% RH, non-condensing
· Dimensions	7.5" L x 8.0" W x 1.25" H

HSQ Technology
1435 Huntington Avenue
South San Francisco, CA 94080-5999
(650) 952-4310 FAX (650) 952-7206

HSQ Model 2508
Analog Expansion Board

HSQ's Model 2508 Analog Expansion Board is designed for use with HSQ's Model 2500 Remote Terminal Unit. The 2508 features a 12 bit integrating A to D converter and 32 analog inputs. Each input can be configured as single ended or differential and is equipped with silicon avalanche diode surge protection. The board can be addressed and read by the 2500 RTU and controlled through that unit's expansion bus.

HSQ 2508 Specifications
· Channels	32 per board
· Connections	Plug-in type terminal blocks for up to 12 AWG wire
· Analog Inputs	16 inputs, each configurable as single-ended or differential: 4 to 20 mA, 0 to 5V, 0 to10V, _5V, _10V 12 bit resolution
· Power	+24 VDC, 355 mA (maximum) plus 20 mA per input driven from board _15V, _5V - derived on board from +24 VDC LED display for +24V, +15V, +5V, -5V, -15V
· Environment	0 - 60°C, operating temperature 10 to 90% RH, non-condensing
· Dimensions	7.25"L x 8.0"W x 1.5"H

HSQ Technology
1435 Huntington Avenue
South San Francisco, CA 94080-5999
(650) 952-4310 FAX (650) 952-7206

HSQ Model 2509
Digital Input Expansion Board

HSQ's Model 2509 Digital Input Expansion Board provides 32 digital input control circuits for HSQ's Model 2500 Remote Terminal Unit. Each input is optically isolated and provides RC noise filtering. LEDs indicate the status of current operations. The 2509 connects to the RTU microprocessor via ribbon cable. The board is addressed and read by the 2500 RTU and controlled through that unit's expansion bus.

HSQ 2509 Specifications
· Channels	32 per board with LED display
· Connections	Inputs: Plug in type terminal block RTU interface: ribbon cable
· Optical Isolation	1500Vdc between field and logic circuits
· Power	+24Vdc, 5 mA, per active input Logic: +5Vdc, 170 mA, nom. (300 maximum) via expansion bus where total load on bus is less than 1A, or via terminal block
· Environment	0 - 60°C, operating temperature 10 to 90% RH, non-condensing
· Dimensions	7.25" L x 8.0" W x .75" H

HSQ Technology
1435 Huntington Avenue
South San Francisco, CA 94080-5999
(650) 952-4310 FAX (650) 952-7206

HSQ Model 2510
Digital Output Expansion Board

HSQ's Model 2510 Digital Output Expansion Board provides 64 digital output drivers for HSQ's Model 2500 Remote Terminal Unit. Each output has an LED that indicates status. Outputs can sink 150mA, simultaneously, at 60_C (one output per driver; IC can sink up to 500mA). The 2510 board connects to the RTU microprocessor system via ribbon cable. It can be addressed and read by the HSQ Model 2500 RTU and controlled through that unit's expansion bus.

HSQ 2510 Specifications
· Channels	64 per board with LED display
· Connections	Outputs and Power - plug in type terminal blocks RTU Interface: 50 conductor ribbon cable
· Power	+24Vdc, 5 mA active output (other voltages on request) Logic: +5 Vdc, 320 mA (maximum) via expansion bus, where total load on bus is less than 1A, or via terminal block
· Environment	0 - 60°C, operating temperature 10 to 90% RH, non-condensing
· Dimensions	7.25" L x 8.0" W x .5" H

HSQ Technology
1435 Huntington Avenue
South San Francisco, CA 94080-5999
(650) 952-4310 FAX (650) 952-7206

HSQ Model 2523
Dual Processor Failover Panel

HSQ's Model 2523 Dual Processor Failover Panel controls RS-232 data channels between dual processor MISER systems and their peripheral devices. If the primary processor fails, Model 2523 automatically switches peripheral devices (including RTUs, terminals, printers, etc.) to the backup processor.

Failover circuitry is symmetrical. Either processor can be designated as "primary". When a "primary" failure occurs, the backup takes its place. Once the problem is resolved, the downed processor is brought online, as backup. At no time does the system have to be restarted.

The 2523's front panel switches provide for manual switching of peripheral devices between processors. Thus, development work can be performed on the backup while the primary system is in full operation.

HSQ 2523 Failover Software

When the system is started or rebooted, each Host processor determines the status of the CPU A / CPU B / AUTO switch and determines which processor will be online and which processor will be standby. The CPU A or CPU B status light will indicate which CPU is online.

If the primary processor fails to communicate for an operator-defined number of seconds, the backup processor sends a fail signal to the failover circuitry. All peripherals, regardless of manual switch positions, are automatically switched to backup.

HSQ Technology
1435 Huntington Avenue
South San Francisco, CA 94080-5999
(650) 952-4310 FAX (650) 952-7206

HSQ Model 2533 Isolated
Digital Output Expansion Board

The HSQ Model 2533 Isolated Digital Output Expansion Board features 32 fully isolated outputs, each of which is capable of sourcing 200mA at 60_C. Each channel is equipped with a suppression diode for driving inductive loads. There is provision for adding an optional multi-layer, ceramic transient voltage suppresser to each output for high voltage surge protection. The 2533 board connects to the RTU microprocessor system via ribbon cable. It can be addressed, read and controlled by HSQ 2500 series Remote Terminal Units and 25x86 Series Logic Processors through the expansion bus.

HSQ 2533 Specifications
· Channels	32 per board, 200 mA per channel at 60_C
· Connections	Plug in type terminal blocks for up to 12 AWG wire for outputs (4 outputs with returns per 8 position connector); 50-conductor ribbon header for expansion bus connection
· Optical Isolation	2500Vac rms between field and logic circuits
· Power	+24Vdc from isolated field supply +5Vdc, 120 mA typical (380 mA maximum), plus 20 mA (maximum) per channel plus output current
· Environment	0 - 60°C, operating temperature 5 to 95% RH, non-condensing
· Dimensions	7.25"L x 8.0"W x .75"H

HSQ Technology
1435 Huntington Avenue
South San Francisco, CA 94080-5999
(650) 952-4310 FAX (650) 952-7206

HSQ Model 2534 Intelligent
Digital Input Expansion Board

The HSQ 2534 Intelligent Digital Input Expansion Board is designed for applications requiring extremely fast input detection and Sequence of Event (SOE) recording. Inputs are interrupt driven and time tagged. Input detection and timing are programmable to a resolution of 1 millisecond. The 2534 can be used with HSQ 2500 Series Remote Terminal Units and 25x86 Series Logic Processors.

The 2534 features optical isolation for 32 digital input control circuits to the RTU or LP. Each input provides RC noise filtering. LEDs visually indicate the status of current operations. The 2534 connects to the RTU microprocessor system via ribbon cable. It can be addressed, read, and controlled by the RTU or LP through that unit's expansion board.

HSQ 2534 Specifications
· Channels	32 per board with flashing LED display
· Connections	Inputs: plug in type terminal block RTU interface: ribbon cable
· Optical Isolation	2500Vac rms between field and logic circuits
· Power	+24Vdc, 10 mA, per active input Logic: +5Vdc, 180 mA, nominal (350 maximum) via expansion bus
· Environment	0 - 60°C, operating temperature 5 to 95%, RH, non-condensing
· Dimensions	7.25" L x 8.0" W x .75" H

HSQ Technology
1435 Huntington Avenue
South San Francisco, CA 94080-5999
(650) 952-4310 FAX (650) 952-7206

HSQ Model 2535
DI to AI Adapter Board

The HSQ Model 2535 DI to AI Adapter Board contains four digital inputs on an eight position pluggable terminal block. The terminal configuration is identical to HSQ's 2509 board. Each input accepts +24Vdc from contact closures or other 24 volt source referenced to the RTU 24 volt return. The inputs are not dielectrically isolated from the system; but, due to their input circuitry, are highly immune to noise.

The 2535 plugs into one of the four AI terminal blocks (TB1 - 4) located on the left side of the HSQ 2504 RTU or the left side of an HSQ 2508 board. Up to four 2535 boards can be installed per 2504 or 2508.

HSQ 2535 Specifications
· Channels	4 per board, 20 mA per channel at 24 VDC
· Connections	Plug-in type terminal blocks for up to 12 AWG wire (4 inputs, per 8 position connector; 24V source per input)
· Power	+24 Vdc supplied through 2504 AI terminal block connection
· Environment	0 - 60°C, operating temperature 5 to 95%, RH, non-condensing
· Dimensions	1.6" L x 1.5" W x .65" H

HSQ Technology
1435 Huntington Avenue
South San Francisco, CA 94080-5999
(650) 952-4310 FAX (650) 952-7206

HSQ Model 2548 16 Channel
Relay DO Expansion Board

The HSQ 2548 16 Channel Relay Digital Output Expansion Board offers 16 relays with Form C dry contacts. Each relay is rated for 10 Amps AC or DC. Each contact has pads on the circuit board for installation of optional devices, such as capacitors or transient voltage suppressers. The 2548 is fabricated in four layers and provides ground planes for inherent immunity to electro-magnetic noise. It can be addressed, read and controlled by HSQ's 2500 Series Remote Terminal Units and 25x86 Series Logic Processors through the expansion bus.

HSQ 2548 Specifications
· Channels	16 Relays with Form C dry contacts
· Contacts	Silver Cadmium Oxide 10 amps at 28Vdc, or 120Vac
· Connections	Outputs: Plug-in type terminal blocks for up to 12 AWG wire; 50 Conductor ribbon header for Expansion bus
· Isolation	1000 Vrms, 60Hz between open contacts 1500 Vrms, 60Hz between coil and contact
· Protection	4 Layer PCB with internal ground planes; Provision for connection of optional protective devices and grounding
· Power	+5VDC through expansion bus: 150 mA (230 mA maximum) +24VDC: 15 mA per relay energized
· Environment	0 - 60°C, operating temperature 5 to 95% RH, non-condensing
· Dimensions	7.5" L x 8.0" W x 1.0" H

HSQ Technology
1435 Huntington Avenue
South San Francisco, CA 94080-5999
(650) 952-4310 FAX (650) 952-7206

HSQ Model 2569
16 DI / 16 DO Expansion Board

The HSQ Model 2569 16 Digital Input / 16 Digital Output Expansion Board is designed for use with HSQ 2500 Series Remote Terminal Units and 25x86 Series Logic Processors. It features sixteen +24 volt inputs and sixteen +24 volt outputs. Inputs and outputs are paired with LEDs. The inputs accept DC voltage or connect to dry contacts. The outputs source 200 mA per channel. Each has a suppression diode for driving inductive loads.

The 2569 is fabricated with internal voltage and ground planes. Each section-input circuitry, output circuitry and logic circuitry-is optically separated. Thus, the 2569 provides noise and transient resistance and full galvanic isolation. The board is addressed and controlled through an HSQ 2500 Series expansion bus.

HSQ 2569 Specifications
· Input Channels	16 per board. Inputs accept +24VDC, or dry contacts LEDs lit when inputs active
· Output Channels	16 per board. Outputs source 200 mA, each at 60°C LEDs lit when inputs active
· Isolation	Optical, 2500 Vac RMS between logic and field voltages
· Connections	Plug-in type terminal block accept up to 12 AWG wire for I/O (4 channels with associated signal returns or voltage source per 8 position connector) and for field voltages (4 position connectors)
· Power	+5 Vdc supplied through expansion bus cable, 220 mA (350 mA maximum) +24 Vdc from isolated field supplies Inputs: 5 mA per input active Outputs: (11 mA + load) per output active (plus output current)
· Environment	0 to 60°C, operating temperature 5 to 95% RH, non-condensing
· Dimensions	7.5" L x 8.0" W x 1.0" H

HSQ Technology
1435 Huntington Avenue
South San Francisco, CA 94080-5999
(650) 952-4310 FAX (650) 952-7206

HSQ Model 2585
Power Control Board

The HSQ Model 2585 Power Control Board provides monitoring and switching capabilities for battery backed RTUs. It provides a battery charging circuit with current limiting at 1.25 Amps. Whenever the 2585 detects a power failure, it automatically switches the RTU to its battery backup, thus assuring smooth and continuous operation. The 2585 features optically isolated power status and battery disconnect control lines. The battery disconnect circuit contains a fail-safe mechanism which guards against deep battery discharge. The 2585 monitors the battery voltage and disconnects from the battery at 19V to prevent damage to the battery and reconnects the system to the battery once the battery is recharged to ≥23.5V. Also featured on-board is a fixed voltage regulator for 5.3V and an adjustable regulator for 5, 9, 10, 12, 13, 15, 16, 18 or 24 V.

HSQ 2585 Specifications
· Connections	Plug-in type terminal blocks, 12 AWG
· Power	Input/Output: 29Vdc, 10 Amps Maximum Optional Regulator: 13.6Vdc, 2.5A Maximum Other Outputs (5 to 18Vdc) Available Output 1: +5VDC at 5A Output 2: +12Vdc, +13.6Vdc at 2.5A
· Environment	0 - 60°C, operating temperature 10 to 90% RH, non-condensing
· Dimensions	4.5" L x 5" W x 2" H

HSQ Technology
1435 Huntington Avenue
South San Francisco, CA 94080-5999
(650) 952-4310 FAX (650) 952-7206

HSQ Model 2587
64 Channel TTL DI Board

The HSQ Model 2587 64 Channel TTL DI Board offers an interface for up to eight HSQ 1046 boards to the HSQ bus. The 2587 is frequently used with an HSQ 1046 termination board for 24 Vdc signals. When used in this manner, +24 Vdc will cause the input to register ON, and 0 Vdc will cause the input to register OFF.

HSQ 2587 Specifications
· Channels	64 per board
· Connections	20-pin ribbon cable connector
· Input	TTL level (5Vdc)
· Power	+5 Vdc at 300 mA maximum per board
· Environment	0 - 60°C, operating temperature -20 to 85°C, storage temperature 5 to 95% RH, non-condensing
· Dimensions	8" L x 6" W x 1.25" H

HSQ Technology
1435 Huntington Avenue
South San Francisco, CA 94080-5999
(650) 952-4310 FAX (650) 952-7206

HSQ Model 8646
12 Channel DI / 12 Channel DO Board

HSQ's Model 8646 12 Channel DI / 12 Channel DO Board offers 12 digital inputs and 12 digital outputs. It is intended solely for use with the HSQ 25x86 Logic Processor.
Each board input is optically isolated and provides RC noise filtering. LEDs (one for each digital input and output) indicate the status of current operations. The 8646 board connects to the 25x86 RTU microcomputer system via ribbon cables and can be used with other input/output termination boards to satisfy specific job requirements.

HSQ 8646 Specifications

· Channels

12 DI and 12 DO per board with LED display

· RTU Interface

Ribbon cable connectors (with power and logic ground):
20-pin DI connector (for 8 DIs)
20-pin DO connector (for 8 DOs)
10-pin connector (for 4 DIs and 4 DOs) that connects to the AUX port of the HSQ 8602 Control Panel board

· Field Connections

Two 18-pin Phoenix connectors

· Connections

Plug-in type Phoenix connector for 12 to 18 AWG wire

· Optical Isolation

2500Vac between field and logic circuits

· Input

24Vdc nominal

· Output Rating

200 mA maximum at 24 Vdc with 24 Vdc logic power

· Power

200 mA at +24Vdc; the board includes a +5Vdc power indicator LED

· Environment

0 to 60°C, operating temperature
-20 to 85°C, storage temperature
- 95% RH, non-condensing

· Dimensions

8.5" L x 4" W x 1.00" H
Approximately 6.3 Ounces