DMI
42
11/04 MN01219002Z-EN
Table 1: Output functions
Function Output switches, if ...
Trip I
i
1)
a short-circuit trip has occurred
Trip I
r
1)
an overload trip has occurred (long-delayed)
Trip I
sd
1)
a short-time delayed trip has occurred
(without I²t monitoring activated)
Trip I²t
1)
a short-time delayed trip has occurred due to I²t characteristics (with I²t function
activated)
Trip I
dn
1)
the permissible residual current was exceeded and has caused a trip
Overtemp.
1)
the permissible operating temperature of the NZM electronic circuitry was
exceeded and has therefore caused a trip
Overload 1 the current in at least one pole has exceeded the permissible value of 100 %
(hysteresis approx. 5 %)
Overload 2 the current in at least one pole has exceeded the permissible value of 120 %
(hysteresis approx. 5 %)
Load warning the current in at least one pole has exceeded the permissible value of 70 %
(hysteresis approx. 5 %)
NZM fault
a motor protection circuit-breaker has detected an unsymmetry of > 50 % in the
phase currents; the message is reset with an unsymmetry of 75 %.
Parameters the parameter sets in the DMI and NZM are different
Trip
1)
the circuit-breaker has tripped, regardless of the cause
Alarm the circuit-breaker has reported an alarm, irrespective of the cause of the alarm
Motor prot. the circuit-breaker (type -ME) detects an overload and asks the DMI to disconnect
the motor. If the overload continues, the circuit-breaker will trip.
Bus the output is to be controlled by the fieldbus (fieldbus module
required)
OFF the output is permanently deactivated
ON if the output is permanently activated
1) The respective outputs are reset if they have been acknowledged after a trip (a section “Alarm
messages”, Page 66).
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