MINI MCR-SL-FM-RC-NC
105448_en_00 PHOENIX CONTACT 8
7Fault monitoring FM
Fault monitoring simplifies error evaluation in multi-channel
isolation amplifier applications using a group error message.
7.1 Fault monitoring for group error detection
• Use MINIAnalog signal conditioners that support fault
monitoring.
• Connect these signal conditioners to the MINIMCR-SL-
FM-RC(-SP)-NC fault monitoring module via the DIN rail
connector .
Detected errors on the signal input of a MINIAnalog isolation
amplifier or in the isolation amplifier are reported to the fault
monitoring module via the DIN rail connector. The module re-
ports the error centrally via an N/C contact.
7.2 Fault monitoring for redundancy monitoring
With "supply via power terminal", the fault monitoring module
can be used to monitor the supply voltage in the group. Fail-
ure of the supply voltage generates a central message via an
N/C contact.
• Install a power terminal and a fault monitoring module of
the same shape side-by-side without spacing.
• Bridge terminals 1 to 4 of the power terminal with termi-
nals 1 to 4 of the fault monitoring module. Use the provid-
ed plug-in bridges FBS2-6 (Order No. 3030336) or
normal cables.
7.3 Application options
– When using a power terminal in combination with a fault
monitoring module on the DIN rail connector: Redundant
voltage supply on the DIN rail connector is possible, re-
dundancy can be monitored, the group error can be eval-
uated.
– When using a fault monitoring module without power ter-
minal in the DIN rail connector: Group errors can be mon-
itored only.
– When using a power terminal in combination with a fault
monitoring module without DIN rail connector: Redun-
dancy of two supply voltages can be monitored.
For additional mechanical redundancy, two
power terminals and two fault monitoring mod-
ules can be used. Only one supply may be con-
nected to each power terminal. In the second
fault monitoring module, fault monitoring of ex-
ternal measuring transducers must be deacti-
vated because evaluation can only take place
via a module in a group.