rotork FAIRCHILD PAX1, User Manual

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8
PAX1 Motor Set Pressure Regulator User Manual
5. Electrical Connections, AC Power
DN
1
2
3
4
5
6
7
8
9
10
11
12
UP
SW2 Isolation Switch
set to “Isolate”
Switch set
to PULSE
-
+
ANALOG
CONTROL
mA +
B(+)
A(-)
L
N
mA -
AC POWER
RS-485
+
DN
UP
-
RS-485 GND
FEEDBACK
LOOP
PWR
PULSE
CONTROL
L N
AC POWER SOURCE
EXTERNAL LOOP SUPPLY
Figure 8 Electrically isolated pulse input control using an external loop supply
1
2
3
4
5
6
7
8
9
10
11
12
4-20 mA CONTROLLER
+
-
Set switch to
ANALOG
+
DN
UP
-
RS-485 GND
FEEDBACK
PULSE
CONTROL
ANALOG
CONTROL
mA +
B(+)
A(-)
mA -
AC POWER
RS-485
LOOP
PWR
SW1
Set switch to 4-20 mA
L N
AC POWER SOURCE
L
N
Figure 9 4-20 mA analog control
1
2
3
4
5
6
7
8
9
10
11
12
AC POWER SOURCE
+
-
+
-
RS-485 GND
FEEDBACK
PULSE
CONTROL
ANALOG
CONTROL
mA +
B(+)
A(-)
L
N
mA -
AC POWER
RS-485
DN
UP
LOOP
PWR
MILLIAMMETER
-
+
EXTERNAL LOOP SUPPLY
External loop supply for
Isolated Feedback Loop
L N
Figure 10 Power and Feedback Connections
A4 US
US
A4
US A4
US
A4