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Installation instructions, Isolated-circuit discrete input and output modules – Spectrum Controls 1746sc-OAP8I User Manual

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Installation Instructions

Isolated-Circuit
Discrete Input and Output Modules

8

1746sc-IC8I Specifications

Number of Inputs

8, sink or source

Points per Common

1 (individually isolated)

Voltage Category

48 Vdc

Operating Voltage

±

30 to 60 Vdc

Nominal Input Current

10 mA @ 48 Vdc

Input Signal Delay (maximum)

Off to On

0.5 ms @ 48 Vdc

On to Off

1 ms @ 48 Vdc

Off-State Current (maximum)

1.8 mA @ 9.5 Vac

Power Dissipation (maximum)

4 W @ 120 Vac/dc

Watts per point

0.6 W @ 48 Vdc; 0.85 W @ 60 Vdc

Total watts

4.5 W @ 48 Vdc; 6.7 W @ 60 Vdc

Backplane Current Draw (max.) 5 V

0.110 A

24 V

0.0 A

Maximum allowable leakage current from an input device in an off state.

Maximum with 1 input turned on.

Maximum with all 8 inputs turned on (100% duty cycle).

1746sc-IC8I On/Off-State Voltage Range

0 Vdc

9.5 Vdc

30 Vdc

60 Vdc

Off-State

Input State Not Guaranteed

On-State

1746sc-IC8I Circuit Diagram (one circuit shown)

IN –

VDC +

7.87

7.87 k

6.65 k

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