IMD 100 Integration manual 4189360015 Rev. G
Protection and errors description
Page 188 of 243
11.
Protection and errors description
11.1
Voltage protection and errors
There are two DC-link voltage error mechanisms:
1.
“HW” mechanism (the trigger for the error is a HW signal but the protection and error are executed
by the SW)
2. SW mechanism
-
+
Overvoltage/Powervoltage error (SW limit)
V
DC-link
V
Parameter
0xA5H
Overvoltage error (HW, 860 V)
Figure 44
Voltage error and protection mechanisms
11.1.1 Overvoltage error
The overvoltage error can be generated by both SW and HW mechanisms.
The SW mechanism measures the DC-link voltage and triggers the error at the DC-link Vmax
threshold (Reg. 0xA5 H, default 789 V).
The HW mechanism generates an error signal when the DC-link voltage exceeds 860 V DC.
Both mechanisms result in error 8 (OVERVOLTAGE), after which the drive is immediately disabled.
11.1.2 Under voltage error
This error is generated only by the SW mechanism. The threshold for this error is set by the DC-link
Vmin parameter (Reg. 0xA5 L). The error generated when the DC-link voltage is below DC-link Vmin
is error 5 (UNDERVOLTAGE), after which the drive is immediately disabled.
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