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1781 Series Quad DC output Discrete I/O Modules

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1781-OB5Q, 1781-OC5Q 1781-RO5Q, 1781-RC5Q

General specifications Operating temperature range –30 to +80°C Storage temperature range –40 to +100°C Isolation 4,000 V rms Capacitance input to output 8 pF Application notes Do not install or remove modules in live (electrically hot) circuits. High voltage may be present. Solid-state output connections are polarized. An externally located communicating diode must be installed across inductive loads. Relay modules for resistive loads only. Relay output connections are not polarized.

Quad DC output module specifications by part number

INPUT	OB5Q	OC5Q	RO5Q/RC5Q1
Nominal Input Voltage	5 V dc	5 V dc	5 V dc
Minimum Input Voltage	4 V dc	4 V dc	4.0 V dc
Maximum Input Voltage	6 V dc	6 V dc	6.0 V dc
Drop Out Voltage	1 V dc	1 V dc	1.0 V dc
Maximum Input Current	15 mA dc	15 mA dc	27 mA dc
Typical Input Current	10 mA dc	10 mA dc	10 mA dc
Nominal Input Resistance	240 Ω	240 Ω	240 Ω
Typical V+ Current	-	-	48 mA dc/channel on
Isolation	4000 V rms	4000 V rms	1000 V rms
OUTPUT
Maximum Line Voltage	60 V dc	200 V dc	110 V dc/125 V ac
Minimum Line Voltage	3 V dc	5 V dc	-
Maximum Off-state Voltage	60 V dc	200 V dc	110 V dc/125 V dc
Maximum Off-state Leakage	1 mA dc	2 mA dc	-
Maximum On-state Current	3.0* A dc	1.0** A dc	1A, 30 W dc , 62.5 V A (resistive load)
Minimum On-state Current	10 mA dc	10 mA dc	-
Maximum 1-second Surge	5 A dc	5 A dc	2.5 A (resistive load)
Peak On-state Voltage @ 25°C	1.5 V dc	1.5 V dc	0.25 V dc
Maximum Turn-on Time	50 µ sec	50 µ sec	2 msec (20 cpm)
Maximum Turn-off Time	100 µ sec	100 µ sec	1 msec (20 cpm)

*   Derate 40 mA/°C above 20°C. When operating in I/O racks that share a common
    fuse between two channels, maximum on-state current must not exceed a total of
    3.75 A rms @ 20° ambient for both channels.
** Derate 20 mA/°C above 60°C. When operating in I/O racks that share a common
    fuse between two channels, maximum on-state current must not exceed a total of
    3.75 A rms @ 20° ambient for both channels.

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