User manual

50
INSTALLATION
INSTALLING THE EMERGENCY POWER OFF (EPO)
The DVR and DVD range are provided with an EPO contact. This allows the UPS to be shut down immediately
without having to wait for the shutdown procedure to be completed.
Note: When the UPS has been switched off using this input, it is not be possible to switch the device back on
again (even if the EPO contact is closed) until the UPS has been restarted manually. If the EPO contact is open,
the UPS will not restart even if the ON key is pressed.
Follow the procedure below to install the EPO switch:
1. Check that the UPS is switched off.
2. Disconnect the EPO input terminal from the UPS.
3. Remove the jumper fixed to the terminal.
4. Apply a volt-free contact signal (isolated and normally closed Vmax: 60 Vdc, 30 Vac RMS; Imax: 20mA),
between Pin 1 and 2 of the terminal, using an unshielded wire of diameter 18-22 AWG (0.75 mm
2
– 0.3mm
2
).
5. Reconnect the terminal to the EPO input.
6. Ensure that the switch connected to the EPO contact cannot be activated by a device powered by the UPS.
7. Connect the UPS to the mains power supply and switch it on using the ON key.
8. Activate the EPO contact by means of the external switch to ensure the UPS shuts down.
9. Deactivate the EPO contact by means of the external switch and restart the UPS.
INSTALLING AN ADDITIONAL BATTERY BOX
The DVD 220 and DVD 300 models are provided with a connector that allows an external battery box to be
connected to the UPS to increase the back-up time available.
Note: When connecting additional batteries a small spark may occur within the connector when the
cable is connected.
Follow the procedure below to install the additional battery box.
1. Connect the cable to the battery connector at the back of the battery box.