17
Technical Information
RS 232/RS 485 communication description
1. Automatic means that when the controller stops, the vent valve is opened
NOTE
with a delay defined by window n. 126; when the controller starts, the vent valve
is immediately closed.
2. On command means that the vent valve is opened or closed by means of
window n. 122.
3. These commands remove the pump motor sup-ply for a short time. If they are
used continuous-ly, they can cause the pump stopping.
Figure 27
252/284
7
6
5
TOO HIGH LOAD
SHORT CIRCUIT
OVERVOLTAGE
AUX FAIL
Window N. 206 Bit Description
TV 301 Navigator User Manual / 87-900-946-01 (N)
4
3
2
1
0
NO CONNECTION
PUMP OVERTEMP.
CONTROLL. OVERTEMP.
POWER FAIL