MR MSENSE DGA 2/3 - 9 Fault elimination; 9.1 Messages regarding the safety switching contact; 9.2 Display faults; 9.3 Replacing a fuse

9 Fault elimination
Maschinenfabrik Reinhausen GmbH 2023 654001150/12 EN MSENSE
®
DGA 2/3
9 Fault elimination
This chapter describes how to eliminate operating faults.
9.1 Messages regarding the safety switching contact
Depending on the fault cause, the safety switching contact (fail-safe relay
FSR) reacts with a delay time of approx. 7…60seconds.
State Contact 25-26 Contact 26-27
Idle state Closed Open
Fault Open Closed
The following faults are recorded via the safety switching contact FSR:
Characteristics/details Cause Remedy
Message via FSR Cable break in the supply
line
Check wiring; in the event
of doubt, contact MR Ser-
vice & Complaint
Drop in the supply voltage Check supply voltage; in
the event of doubt, contact
MR Service & Complaint
Hardware overheating
(µC)
Check ambient tempera-
ture; in the event of doubt,
contact MR Service &
Complaint
Hardware failure at the
component level (HW)
Contact MR Service &
Complaint
9.2 Display faults
Characteristics/details Cause Remedy
Display no longer shows
events
Display fault Check wiring. If OK: Inter-
rupt supply voltage for
5seconds. This activates
a restart.
Display without function Safety fuse defective Follow the instructions in
the "Replacing a
fuse" [►Section 9.3, Page
65] section
9.3 Replacing a fuse
The device is fused with a safety fuse.
This can be replaced by a replacement fuse (500mA, 500V, 5x20mm, de-
layed-action) if needed.