Maintenance and repair
Ex p control unit
Motor Purge Controller
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01-37A2-7D0003_Operating instructions_MPC_20210923_0_en.docx
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Fault messages
The control units give plain text messages, which are divided into 3 categories.
Positive messages are notifications that do not affect the readiness of the
system.
Warning messages are messages that partially affect the system.
Alarm messages are messages which lead to the shutdown of the
protected equipment.
10.4.2.1
Positive messages
Status
Code
Plain text
00000001
Purging process
The control unit has started the purging process.
00000002
Ex p Ready
The control unit has successfully completed the purging process. The main switch or
jumper HS_IN / HS_OUT not closed.
00000003
Ex p Active
The control unit has successfully completed the purging process. The main switch or
jumper HS_IN / HS_OUT is closed and the release is given.
00000004
p3 reached
The setpoint “p3” purge flow is reached and purging time counts down.