Western Reserve Controls WRC Quad AC/DC input Discrete I/O Modules

1781 Series Quad AC/DC input Discrete I/O Modules

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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
Line frequency range 47 to 63 Hz

* @ nominal input voltage (ac)

Application notes

Do not install or remove modules in live (electrically hot) circuits. High voltage may be present.
Input connections are non-polarized.
The controlled voltage on the output pins (OUT 1,2,3, and 4) cannot exceed 3 V dc higher than +Vcc. This is a limitation of the reverse breakdown voltage of the status indicator LED's.
An externally located diode (forward biased) can be installed in series with +Vcc 1 & 2 (pin 4) or +Vcc 3 & 4 (pin 11) of the module to extend the output control voltage to a maximum of 30 V dc. An externally located diode (forward biased) can be installed in series with the + terminal of a quad backplane to extend the output control voltage to a maximum of 30 V dc.

Quad AC/DC input module specifications by part number

INPUT

1781-IA5Q

1781-IM5Q

1781-IN5Q

Units

Nominal Input Voltage 120 240 24/48 Vrms/Vdc

Minimum Input Voltage 90 180 10 Vrms/Vdc

Maximum Input Voltage 140 280 60 Vrms/Vdc

Maximum Input Current* 10 8 30 mA rms

Drop Out Current 2.5 1.5 1 mA rms

Allowable Off-state Current 3 2 1 mA rms

Allowable Off-state Voltage 50 120 2 Vrms/Vdc

OUTPUT

Nominal Logic Supply Voltage 5 5 5 V dc

Minimum Logic Voltage 4.5 4.5 4.5 V dc

Maximum Logic Voltage 6 6 6 V dc

Typical Logic Supply Current* 10 10 10 mA dc

Max. Logic Supply Current** 14.5 14.5 14.5 mA dc

Max. Logic Sup. Leak. Currrent** 20 20 20 µA dc

Maximum Output Voltage 30 30 30 V dc

Maximum Output Current 50 50 50 mA dc

Max. Output Leakage Current** 20 20 20 µA dc

Max. Output Voltage Drop † 200 200 200 mV dc

Maximum Turn-on Time (ac) 20 20 20 msec

Maximum Turn-off Time (ac) 30 30 30 msec

Maximum Turn-on Time (dc) 1 1 1 msec

Maximum Turn-off Time (dc) 1 1 1 msec

* @ nominal voltage
** @ maximum logic voltage
† @ maximum output current