Wärtsilä JOVYTEC PMS 2002K / 3002K BAX 4837E
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12.
Potential free signals from the relay card (optional)
12.1
Description of the relay card
An optional relay board can be added optionally. It provides voltage-free contacts for external further use. These
contacts are designed a standard as closing contacts, meaning they are closing in the case of a fault. There is
also a possibility of changing the logic to opening contacts by reversing a jumper on the relay card. The relay
card also makes the electronic – STOP – function available. This function is deactivated as standard over a
bridge on the relay card. If the electronic-STOP functionality is used then the bridge should be removed from the
plug and an external switch (opener) is to be clamped on the rear plug. Actuation of the external electronic
STOP switch causes the output of the UPS unit to be switched voltage-free and the UPS unit shuts down. In
order to supply consumers with voltage again it is necessary for the electronic STOP switch to be reset and for
the UPS to be restarted. There is still a
voltage
inside and at the terminals even after the electronic STOP
function was activated.
The signals which are available on the relay card are as follows:
Pin
Description
I/O type
Contact setting Normal
condition
In the case
of a fault
1
UPS fault
Output
1 – 5
opened
closed
2
Group alarm; the following alarms are
integrated together:
Fault in output voltage
Bus fault
Overtemperature
Overload
Overcharging
Battery test failed
Battery charging device – fault
Output
2 – 5
opened
closed
3
GND for output
4
Remote shutdown (Battery Operation)
Input
3– 4
opened
closed
5
GND (reference point for the relay
actuation)
6
Bypass active
Output
6 – 5
opened
closed
7
Battery discharged
Output
7 – 5
opened
closed
8
Free
9
Power failure
Output
9 – 5
opened
closed
When using the contacts with the inverted logic the contact positions are set vice versa!