IMD 100 Integration manual 4189360015 Rev. G
Operational procedures
Page 146 of 243
9.13.3 Operation
When starting the discharge, the IMD disconnect the mains from the DC-
link (“Mains, disconnect”),
and turn the fan on. The discharge operation does not change the IMD state.
The Actual SE voltage can be monitored continuously in the IMD manger:
Discharging fully loaded capacitors can take some time. To calculate the approximate time full
discharge will take use the following formula:
Formula:
𝑡 =
0.5∗𝐶∗𝑈
2
𝑃𝑏∗0.75
t: Total approximate discharge time (to zero) in s
C: Total SE capacity in F
U: DC-link/SE voltage in V
Pb: Ballast resistor rated power in W
Example:
𝑡 =
0.5∗2∗450
2
300∗0.75
= 900𝑠
C: 2 F
U: 450 V
Pb: 300 W
9.13.4 Deactivation
IMD Manager:
Select “29:SE discharge OFF” or “0: Idle” in the “States and special commands” group
in the “Monitor and control” tab:
CAN/CANopen:
send “
29
” to the special commands register (reg. 0x03).
The remaining voltage on the capacitors depends on the way the discharge stopped: