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Device communication via the BMS bus
10.7 Alarm and operating messages via the BMS bus
Messages are transmitted to a maximum of 12 BMS channels. All alarm and operating
messages that may occur are described below.
10.7.1 Alarm messages
Message
Channel
Insulation resistance "prewarning"
Alarm 1 (insulation fault)
1
(Value < response value 1, R
Insulation resistance "alarm"
Alarm 2 (insulation fault)
2
(Value < response value 2, R
Connection system
4
Connection fault system
Connection PE
5
Connection fault earth
Device error
7
Internal device error
Start
The insulation fault location is started
insulation fault location
Overtemperature
10
Overtemperature coupling terminal L1/+
coupling
Overtemperature
11
Overtemperature coupling terminal L2/–
coupling
Overtemperature PGH
12
Overtemperature of the locating current injector
43
Description
< R
)
F
an1
< R
)
F
an2
Device communication via the BMS bus
10.7.2 Operating messages
Message
Channel
Current insulation resistance RF
Insulation resistance
1
(when R
Current insulation resistance RF
Insulation resistance
2
(when R
Leakage capacitance C
Leakage capacitance
4
Current system voltage U
Mains voltage
5
Partial voltage U+/PE
6
Current partial voltage terminal L1/+ to earth
Partial voltage U-/PE
7
Current partial voltage terminal L2/– to earth
Current PGH locating current (when the EDS system is
PGH current
8
active)
Temperature coupling
10
Current temperature of the coupling L1/+
Temperature coupling
11
Current temperature of the coupling L2/–
Temperature PGH
12
Current temperature of the locating current injector
10.7.3 Resetting error messages
Recorded errors are provided as alarm messages on the BMS bus.
The fault messages are reset via the device menu. If the error continues to exist, the mes-
sage will be generated again. The error can also be reset by means of the acknowledge-
ment command via the BMS bus.
Description
> (R
+ hysteresis))
F
an1
> (R
+ hysteresis))
F
an2
in nF, μF
e
N
iso1685DP_D00272_02_M_XXEN/07.2017
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