VAMP 220 - Handling Self-Supervision Faults; Master Unit Error Indication and Fault Messages

VAMP Ltd Arc protection system
User manual
VAMP 220 / 220R
VM220.EN004 Vamp 24h support phone : +358 (0)40 573 6316
57
CURRENT
USE KNOB TO SET
THE START CURRENT
VALU E
CURRENT IN PHASE 1
CURRENT IN PHASE 2
CURRENT IN PHASE 3
Figure 7.2.2-1 Reading the measured current values in CURRENT mode.
7.3. Handling self-supervision faults
7.3.1. Error indications
The self-supervision system supervises the function of the arc
protection system continuously. When it detects an internal
fault, an alarm signal is issued via the SF alarm contact of the
master unit, and the ERROR indicator on the front panel of the
master unit will remain lit to indicate an internal fault. A fault
message is generated.
The three last fault messages are stored in the memory of the
master unit.
Due to continuous selftesting of the internal circuitry, a weak
rapid light pulse occurs on the ERROR indicator. This is
because the test pulse is checking that the internal connections
are intact, no actions need to be taken.