Servomotors
Servomotor 3-point step
18
© Lutz-Jesco GmbH 2017
BA-20710-02-V05
Chlorine control valve
C 7700
Operating instructions
8 Servomotors
DANGER
Mortal danger from electric shock!
Improperly installed or damaged components in the electronics
installation can cause injury.
ð
Ensure that all work on the electrical installation is performed by a
qualified electrician.
ð
Ensure that all work on the electrical installation is performed in a
de-energised state.
ð
Ensure that the power supply is secured with a fault current
protective circuit.
ð
Replace damaged cables or components without delay.
The regulation valve C 7700 can be equipped with various servomotors.
This section describes the electrical connection for the various versions
and how they are operated.
8.1 Opening and closing the servomotor
Resources required:
@
Philips screwdriver size Ph2
Open
Perform the following working steps:
1.
Loosen the two screws on the cover.
2.
Pull the cover towards the right.
ü
Servomotor is open.
Fig. 11: Opening the servomotor
Close
Perform the following working steps:
1.
Push the cover onto the motor from the right side.
2.
Tighten the screws with approx. 0.5 Nm.
ü
Servomotor is closed.
8.2 Servomotor 3-point step
8.2.1 Technical data
Description
Value
Voltage supply
230 V ±10 %, 50/60 Hz ±5 %, optional:
115 V AC or 24 V AC (see rating plate)
Power consumption
7 VA
Protection class
IP 65
Actuating time
30 s (optionally other times, see rating
plate)
Regulation signal
3-point step
Position feedback
0 - 1000 Ohm
Max. potentiometer load
0.3 W, loop current 2 mA
Regulation bevel
90°
Torque
10 Nm
Switching capacity of
relays (optional)
Max. 2.5 A / 250 V AC
Table 14: Technical data
8.2.2 Circuit diagram and terminal connection
Fig. 12: Circuit board 3-point step
A
B
C
D
E
