Valve Position Output And Feedback Input Wiring - YOKOGAWA UT Advanced UT32A User Manual

17.4 Wiring
17.4.4 Valve Position Output and Feedback Input Wiring
17-10
1) Use an auxiliary relay for load-switching if the contact rating is exceeded.
2) Keep the relay output wires and the feedback input wires at least 30 cm apart.
3) The output relay has a limited service life. Be sure to connect a CR filter (for AC)
or diode (for DC) to the load.
4) If there is a risk of external lightning surges, use a lightning arrester etc.
5) Relays cannot be used for a small load of 10 mA or less.
► When using auxiliary relay: 17.4.3 Control Output (Relay, Current, and Voltage Pulse) Wiring
Relay contact output (UT35A)
HIGH
507
(direct)
LOW
508
(reverse)
509
COM
Contact rating: 250 V AC, 3 A
30 V DC, 3 A (resistance load)
Note: Cannot be used for a small load of 10 mA
or less.
Feedback input (resistor) (UT35A)
Shield
100%
Resistance:
100 Ω to 2.5 kΩ
0%
Class D grounding
(grounding resistance of 100
Feedback input (current) (UT35A)
Shield
4 to 20 mA DC
Class D grounding
*: Always set the terminal 511 in open state.
CAUTION
VALV
Note: Cannot be used for a small load of 10 mA
or less.
Feedback input (resistor) (UT32A)
510
Resistance:
511
VALV
100 Ω to 2.5
512
Ω or less)
+
510
VALV
512
–
* Always set the terminal 311 in open state.
Relay contact output (UT32A)
HIGH
101
(direct)
LOW
102
(reverse)
103
COM
Contact rating: 250 V AC, 3 A
30 V DC, 3 A (resistance load)
Shield
100%
310
311
kΩ
312
0%
Class D grounding
(grounding resistance of 100
Feedback input (current) (UT32A)
Shield
+
4 to 20 mA DC
Class D grounding
VALV
VALV
Ω or less)
310
VALV
312
–
IM 05P01D31-01EN