Mounting Instructions

Install internal components
Earth fault monitor PCA2001-A1
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6.21 Earth fault monitor PCA2001-A1
The 'Ground fault monitoring (24V)' PCA2001-A1 detects the earth fault at the
isolated DC 24 V wiring to the external components provided by PCA2011-A1 and
PCA2018-A1. It ensures that an earth fault on the external DC 24 V wiring outside
of the cabinet is detected and reported.
6.21.1 Installation
Fig. 80: PCA2001-A1 connectors and jumper
The PCA2001-A1 provides two connectors to connect DC 24V, earth and a relay
output to report the status.
The PCA2001-A1 shows the status with 2 LEDs:
● EF+ active when an earth fault to DC 24 V occurs
● EF- active when an earth fault to DC 0 V occurs
6.21.2 Configuration with the jumpers
The earth fault threshold is set to 50 kOhm according to EN 54-16.
The sensitivity can be reduced to 10 kOhm by setting the jumpers SJ1 and SJ2.
SJ1
SJ2
ID
0
0
Sensitivity 50 kOhm
0
1
Prohibited
1
0
Prohibited
1
1
Sensitivity 10 kOhm
Table 63: PCA2001-A1 set the sensitivity with jumper switches
Jumper switch SJ1 and SJ2 settings:
● 0 = OFF; no jumper is set
● 1 = ON; jumper is set
1 CN1
1 CN2
Power
DC 24 V
Earth
Fault
SJ1
SJ2
EF+
EF-