Vertiv™ NetSure™ HVT F02 CK1 Power System User Manual
45
No.
Alarm
Handling Method
5
DC Volt High
Check the DC over-voltage value through the controller. If the set value is inappropriate, correct it. Otherwise, find out the
rectifier that has caused the alarm:
1. Ensure that the batteries can operate normally.
2. Switch off the AC input of all rectifiers.
3. Power on the rectifiers one by one.
4. If the over-voltage protection is triggered when a certain rectifier is powered on, that rectifier is the faulty one. Replace it
6
DC Volt Low
1. Check if the alarm is caused by mains failure, if yes, disconnect some loads to prolong the operation of the whole system.
2. Check the DC under-voltage value set through the controller. If the set value is inappropriate, correct it.
3. Check if any rectifier is inoperative or has no output current. If yes, replace it.
4. Check if the total load current exceeds the total rectifier current during float charge. If yes, disconnect some loads or add
more rectifiers to make the total rectifier current bigger than 120% of the total load current with one redundant rectifier
7
Load Fuse Alarm,
Batt Fuse Alarm
Check if the corresponding MCB is switched off. If the MCB is open, find out the fault and remove it. Otherwise, the alarm circuit
is faulty. Please contact Vertiv
8
LVD2
1. Check if there is mains failure, and the battery voltage is lower than the value of ‘LVD2’.
2. Check whether the battery is disconnected from the system manually
9
Rect Failure
The rectifier with the fault indicator (red) on is faulty.
Power off the rectifier, and then power it on after a while. If the alarm persists, replace the rectifier
10
Rect Protect
Check if the mains voltage is above 530V or under 260V. If the mains voltage is under the AC under-voltage value or above the
AC over-voltage value, the mains grid should be improved
11
Rect Fan Fails
Pull out the rectifier to check if the fan is obstructed. If yes, clean it and push the rectifier back. If the fan is not obstructed or if
the fault persists after cleaning, replace the fan
12
Rect Not Respond
Check if the communication cable is connected properly between rectifier and controller. If yes, restart the rectifier. If the alarm
persists, replace the rectifier
13
Batt Over Temp
1. Check if the battery compartment temperature is too high. If yes, cool down the battery compartment.
2. Check if there is battery internal fault. If yes, replace the faulty battery
14
Insul Fail
Confirm the load branch causes bus insulation fault according to alarm displayed in LCD, and then check this load branch
4.5
Replacing Controller
Replace the controller when the controller fault affects DC power supply safety.
If the controller is faulty, please see the following procedures to replace the controller:
1. Open the front door of the rectifier cabinet and unplug all the cables on the rear of the controller.
2. Loosen the four fixing screws at the rear of the controller, as shown in Figure 4.4, pull out the controller, and remove the
controller.
Figure 4.4 Rear view of the controller
48V
+
PE
VCC SDA SCL GND
DI1
DI2
+
+
DI5
DI6
DI3
DI4
RS485-1
A
B
PE
RS485-2
A
B
PE
RS485-3
A
B
PE
CAN1
H
L
CAN2
L
H
D
O
1
D
O
2
D
O
3
D
O
4
D
O
5
D
O
6
D
O
7
D
O
8
RS232
A
B
PE
RS485
以太网口
后
USB
口
3. Check that the new controller works normally.
4. Push the new controller into the mounting hole.
