Willo Instruction Manual
9
SNMP
The UPS inside Willo may be fitted with an internal SNMP card. This allows communication with
the UPS over a network.
The SNMP device allows some control of the UPS via the network:
Remote Battery Test
The UPS can be instructed remotely to perform a battery test, either for 10 seconds, a set
number of minutes, or until the battery reaches a certain threshold. There are limitations with
this test however.
1. The unit cannot perform a battery test if it is in ECO mode. This is a factory-set
configuration.
2. The test does not stop AC power from feeding the UPS. This means the UPS internal
chargers are active and producing DC. Therefore the UPS inverter will only start to take
power from the batteries, and hence test them, if the output power of the load is in
excess of the power output of the chargers. If not, the test will most likely always report a
pass.
3. If the test is performed and no event log is recorded, it is likely the UPS aborted the test
due to an issue but has not alarmed. In all probability there is a problem that needs
investigating.
4. If the test is performed and fails, then output power from the UPS is likely to be lost for a
few moments. Depending upon how connection is made to the UPS SNMP card, then
communications with the UPS may also be lost.
