7EN02-0423-03

Commissioning for functional safety standards compliance

Introduction

In a Functional Safety Standards-compliant installation, you must test the complete device and system setup before deployment of the installation.

Commissioning process

Stage Description
1

Validate the device wiring to the description in the Product Installation and Wiring section. See Product installation and wiring.

NOTE: Make sure that the exclusion logic is implemented in the PLC or the control circuit to ensure a correct insulation alarm detection.
2

Validate the device settings to the description in the Product Setup. See Safety standards compliance requirements.

NOTE: Make sure that the exclusion logic is implemented in the PLC or the control circuit to ensure a correct insulation alarm detection.
3 Validate the insulation monitoring with exclusion management.

Insulation monitoring and insulation fault detection testing

  1. When the device is powered off, make sure that inputs of the PLC or the control circuit as per the product installation and wiring section. See Safety standards compliance requirements.

  2. Connect a resistor between the monitored network and the earth and check the measurement:

    • When the resistor value is alarm threshold +20%, no alarm is generated.

    • When the resistor value is alarm threshold -20%, an alarm is generated.

    NOTE: This test must be done offline and install under test disconnected from system.
  3. Check that the alarm relay toggles according to the resistance used for the test.

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