PL4RO - 4 Relay Output Module

The PL4RO module has 4 normally open/ normally closed relay outputs. These modules may be used when a higher drive capability is required, or when isolation between outputs are required.

An output watchdog timer can be configured to switch off all the outputs if there has been no communications with the module for up to 255 seconds. A value of 0 seconds will disable this timer and the outputs will remain in the last programmed state.

PL4RO - 4 Relay Output Module

Digital Outputs



Relay – 1 x Form C

Max Load Current

0.5Aac / 1Adc.

Max load Voltage

220Vac / 28Vdc

Isolation (Field & Logic)


Watch dog output timer

Disable or 1-255 sec adjustable

Status Indication

LED for each channel

Power supply (Logic)


Order Codes

  • PL4RO - 4 Relay Output Module

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PL4RO - 4 Relay Output Module

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Procon Electronics