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ZMR function (ZMR_HA): "Manual" mode
Output byte 0, bit 3 (ZMR manual mode/automatic operation) can be used
from the host to define, for the ZMR function, whether the DS7 soft starter
should be automatically switched back on after an overload shutdown
caused by the ZMR function once the overload (= thermal motor model in
PKE motor-protective circuit-breaker < 100 %) is no longer present. If not
(i.e., "manual" mode), the overload will have to be acknowledged. Input byte
1, bit 7 (ACKR) is used to indicate to the host that an acknowledgment is
required. The bit is set if the PKE signals a thermal motor model ≧ 110 %
and the ZMR function is in "manual" mode.
During an overload, i.e., thermal motor model ≧ 110 %, this is signalled with
input byte 1, in the differential trip indication in bits 4 to 6, with a value of
5
.
hex
The user can use both pieces of information to determine that a trip
operation caused by the ZMR function has occurred and to find out whether
the thermal overload is still present.
It can be acknowledged by switching the DS7-SWD soft starter or by
changing the ZMR operating mode:
•
For profiles 1 to 3: By setting bit 0 (DS7 start/stop) in output byte 0 to 0
(stop)
•
For profiles 4 to 6: By setting bit 0 (EN_Set) in output byte +1 (Short) to 0
(deactivate setpoint value)
•
For profiles 7 to 9: By setting bit 6 (EN_Set) in output bytes 1 and 2 to 0
(do not activate setpoint value)
•
Or for profiles 1 to 9: By setting bit 3 (ZMR mode) in output byte 0 to 1
(ZMR "automatic" mode) and then, optionally, setting it back to 0
("manual"). This will reset bit 7 (ACKR) in input byte 1 – independently of
the thermal motor model.
DS7 Soft starter 09/16 MN03901001Z-EN www.eaton.com
8 SmartWire-DT
8.9 Programming
169
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