66
Vertiv I Liebert ITA2 30kVA I Manual
1. Through the LCD settings page, change the Dry connect 3 to 'Maintain mode'. See
Figure 5-7.
Figure 5-7 Changing dry contact 3 to 'Maintain mode'
2. Use the maintenance bypass signal cable (accessory of POD) to connect Dry Contact Port
3 of the UPS with interlock port on the POD. See Figure 5-8.
N
客户输入
/USER INPUT
bC
mC
bB
mB
bA
mA
PE
N
客户输出
/USER OUTPUT
sB
sC
sA
sC
sB
UPS
输出
/UPS OUTPUT
N
sA
N
UPS
输入
/UPS INPUT
PE
mA
bA
mB
bB
mC
bC
INTERLOCK
3
3
Figure 5-8 Ports connection
3. Remove the fixing screws of the baffle of the maintenance bypass switch, then rotate the
baffle upwards till it is completely fixed, finally fasten the fixing screws.
At this time, the system Interlock function is activated, the UPS will transfer to internal
bypass mode, and you should confirm that the UPS has been transferred to internal bypass
mode.
4. After the confirmation, close the maintenance bypass switch.
5. Open the input MCB, maintenance bypass MCB and output MCB on the front panel of the
POD. Perform the maintenance operation after the UPS complete shutdown.
Dry contact port 4 can achieve the same function as dry contact port 3 via the
above steps.
