VARMECA
19
7.4 - Grouped options (RDCVS)
The RDCVS printed circuit is fitted instead
of the standard connection circuit and
offers the additional functions described
below.
7.4.3 - Selector switches for the speed
reference
The selection is made according to the table
below :
Factory setting.
7.4.1 - Speed controller fault
Volt-free contact (1A/250V) on terminal block
no. 4 (terminals P1 - P2). Contact open when
there is a fault on the electrical part or when
the speed controller is switched off.
Reference
Position
of switches
selected
S1
S2
S3
"Local" control
button or external
potentiometer
0
1
1
"VIT INT" potentio-
meter
0
0
1
0 - 10 V external
reference
1
0
1
4 - 20mA external
reference
1
0
0
7.4.2 - Adjustment of the internal speed (VIT INT) and the maximum speed (VIT MAX) via
potentiometers.
The "VIT MAX" potentiometer is used to reduce the maximum speed for a maximum
reference, independently of the setting of S4. The "VIT INT" potentiometer is used to adjust an
operating speed : it replaces the adjustment of the external potentiometer. Access to these
settings depends on the position of the selector switches (S1, S2, S3).
Fault relay
Supply
RFI filter
Adjustment of
internal speed
Control reference
selector
Max. speed stop
Control/Command
