Azbil Micro Flow MQV9005 - Page 32

3-10
Chapter 3. MOUNTING AND WIRING
• External 3-way switching input
20
18
16
OPEN
5 V
0 V
+5 V
MODE INPUT
A.GND (0 V)
Handling Precautions
•
When switching by relay, use an appropriate relay intended for micro-
current use (with gold contacts). Failure to do so could cause faulty
contact, resulting in malfunction.
Operation of external 3-way switching input
Input state of pin No.16
OPEN GND 5V
Assigned function
Switching of operating mode 1 Control Fully closed Fully open
Switching of operating mode 2 Fully closed Control Fully open
Switching of SP No. SP-0 SP-1 SP-2
Switching of totalizing operation Continue
counting
Reset Stop counting
Switching of analog I/O
voltage range
Input Internal
reference
*
0 to 5 V or
external
reference
0 to 20 mA
External
reference
0 to 5 V or
0 to 20 mA
External
reference
1 to 5 V or
4 to 20 mA
Output
0 to 5 V/0 to
20 mA
0 to 5 V/0 to
20 mA
1 to 5 V/4 to
20 mA
* "Internal reference" refers to the use of the 5 V DC reference voltage pin (No. 20) on
this device, and is used when the setting value is set by an externally connected
potentiometer.
Note
•
For details on how to assign external 3-way switching input functions,
Chapter 5, ADVANCED OPERATION  Function setup items
C-09
(P.5-4).