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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

9

1746sc-IM8I Specifications

Number of Inputs

8, sink or source

Points per Common

1 (individually isolated)

Voltage Category

200/240 Vac @ 50/60 Hz

200/240 Vdc

Operating Voltage

160 to 264 Vac @ 47 to 63 Hz

170 to 265 Vdc

Nominal Input Current

13.5 mA @ 240 Vac, 60 Hz

2.5 mA @ 250 Vdc

Input Inrush Current (maximum)

0.7 A @ 240 Vac

Input Signal Delay (maximum)

Off to On

15 ms @ 240 Vac

7 ms @ 250 Vdc

On to Off

40 ms @ 240 Vac

36 ms @ 250 Vdc

Off-State Current (maximum)

2.5 mA @ 40 Vac

0.85 mA @ 40 Vdc

Power Dissipation (maximum)

Watts per point

085 W @ 240 c/dc; 1 W @ 264 Vac/dc

Total watts

6.6 W @ 240 Vac/dc; 8 @ 264 Vac/dc

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-IM8I On-Off-State Voltage Range

0 Vac*

0 Vdc

60 Vac*

40 Vdc

160 Vac*

170 Vdc

264 Vac*

265 Vdc**

Off-State

Input State Not Guaranteed

On-State

* Frequency = 47 to 63 Hz

** 276 Vdc short-term overload (1 hour)

1746sc-IM8I Circuit Diagram (one circuit shown)

IN –

VAC/VDC +

499

49.9 k

49.9 k

0.15

µ

F

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