Siemens MXG461B Series - Control and Operation; Valve Control and Wiring; Operating State Indicators

MXG461B Series Modulating Control Valve Technical Instructions
with Magnetic Actuator Document Number 125-4461
May 3, 2006
Siemens Building Technologies, Inc. Page 3
Control
The magnetic actuator can be driven by any controller with a 0/2 to 10 Vdc or 0/4 to
20 mA output signal.
To achieve optimum control performance, it is recommended to use a 4-wire connection
for the valve.
The controller’s signal ground terminal M must be connected to the valve’s terminal M.
Terminals M and G0 have the same potential, and are internally interconnected in the
valve’s electronics.
CAUTION:
You must use a four-wire connection with Vdc power supply.
Basic Diagram
SSEN0335R1
Power
Supply
Power
Control
Micro
Controller
Stroke
Control
Hand Control
Stroke
Sensor
Calib.
M
DIP-Switch
ON ON
12
ON
3
B-Mode
G
G0
Y
U
M
Z
X3 AMP
Bus-Subprint
Phs
0/4 to 20 mA
0/2 to 10 V
0/4 to 20 mA
0/2 to 10 V
Phs
Green / Red
SPh
0 to 20 Vdc
1M
Spring Return Action
If the power or positioning signal is switched off or fails, the valve control path
(port A → AB) is automatically closed by the force of the spring.
Table 2. Indication of Operating State.
LED Indication Operating State,
Function
Remarks, Troubleshooting
Lit Control mode Normal operation; everything OK.
Green
Flashing
Calibration
In manual control
Wait until calibration is finished
(green or red LED will be lit).
Hand wheel in Man or Off position.
Lit
Calibration error
Internal error
Recalibrate (bridge contacts behind the
calibration slot).
Replace electronics module.
Red
Flashing
Mains fault
DC Supply -/+
Check electric main network (outside the
frequency or voltage range);
Vdc supply +/- connection polarity.
Both Dark No power supply
Electronics faulty
Check electric main network, check wiring.
Replace electronics module.