Electrical Connection; Safety Function - Gira 0389 Series Operating Instructions Manual

Electrical connection

All the connecting terminals are equipped with slotted screws for
screwdriver mounting. A common screwdriver with a 3 mm blade can be
used.
The connection has 6 terminals:
1 - External sensor
2 - External sensor
3 - N
4 - N
5 - L' (relay contact with equipotential bonding)
6 - L
A separate terminal can be used for each conductor through two
connection possibilities of the neutral conductor (N).
Ext. sensor (optional)
Load

Safety function

The top unit of the room temperature controller is protected against
unintentional placing on the underplaster unit of a Gira blinds control
system.
When used incorrectly the room temperature controller displays the text
FAIL flashing.
Failure at the external sensor
With use of an external sensor, this is tested for correct functionality. If
the sensor is defective or the supply cable is interrupted or short-
circuited, FAIL appears in the display.
For more accurate error determination please control the value in the
parameter menu "Temperature at the external sensor (F)" (see page 7):
• with a temperature below + 3.5 °C, a short-circuit has occurred in the
sensor line or the sensor itself.
• with a temperature above + 85 °C, the supply cable has been
interrupted or the sensor is broken.
RTR with clock
5