Concept
Relay Outputs
The relay outputs support digital Form A point types. The Form A relays are designed for direct load applications.
The outputs can be configured as one of the following types:
Digital output
Digital pulsed output
Pulse width modulated output
Tristate output
Tristate pulsed output
Consider the expected number of operation cycles specified for the relay output (cycle life rating) when configuring the period for a pulse width modulated (PWM) output point.
Outputs
The DO relay outputs are Form A digital outputs, which means the outputs are normally open contacts with one common terminal (C) and one normally open terminal (NO). The terminals are isolated from other circuits of the device and from signal ground.
Three Form A relays share a common terminal but the outputs can be controlled independently.
Specifications
Channels, RP-C-12A-F-24V
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0
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Channels, RP-C-12B-F-24V
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3, DO1 to DO3
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Channels, RP-C-12C-F-24V
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3, DO5 to DO7
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Channels, RP-C-16A-F-230V
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3, DO5 to DO7
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Contact rating
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Pilot Duty (C300)
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Resistive load: 250 VAC/30 VDC, 4 A (cos phi = 1)
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Inductive load: 250 VAC/30 VDC, 4 A (cos phi = 0.4)
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Switch type
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Form A Relay
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Single Pole Single Throw
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Normally Open
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Commons
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COM1 for DO1, DO2, and DO3 (on RP-C-12B model)
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COM3 for DO5, DO6, and DO7 (on RP-C-12C and RP-C-16A models)
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Isolation contact to system ground
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3,000 VAC
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Cycle life
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At least 100,000 cycles
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Minimum pulse width
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100 ms
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RP-Cs
RP-C Onboard I/O