The power supply provides three fault relay outputs and two external fault inputs.

Power supply fault relay outputs and external fault inputs

Fault relay output connectors 'Mains', 'Bat' and 'Gen'

Power supply fault relay output connectors 'Mains', 'Bat' and 'Gen'

Pin

Designator

Connection

1

NO

Connected to C in regular mode (relay active)

2

C

Common

3

NC

Connected to C if fault occurs (relay released)

Power supply fault relay output description 'Mains', 'Bat' and 'Gen'

Relay

State

Description

Mains

Active (closed)

Regular operation mode at mains input

Mains

Open

  • Mains input fails
  • Mains input rectifier fails

Bat

Active (closed)

Regular battery operation

Bat

Open

  • No battery connected
  • High resistance of battery circuit
  • Low battery voltage

Gen

Active (closed)

Regular operation, no fault

Gen

Open

  • Internal power supply fault
  • External fault active

External fault relay input connectors 'Ext-1' and 'Ext-2'

Power supply external fault relay input connectors 'Ext-1' and 'Ext-2'

Pin

Designator

Connection

1

InA

Ext Input A

2

InB

Ext Input B

Power supply external fault relay input description 'Ext-1' and 'Ext-2'

Relay

State

Description

Ext-1

Open

Fault active, activates 'Gen' relay

Ext-1

Closed

No fault, power supply is delivered with a closed jumper to always close the input. It has to be there even if the input is not used.

Ext-2

Open

No fault

Ext-2

Closed

Fault active, activates 'Gen' relay