3-9
Chapter 3. MOUNTING AND WIRING
z
Connector signal names
Pin No.
Signal name
Description
Notes
20
+5 V (5 mA max.) 5 V DC reference voltage output 5 mA max.
19
FLOW OUT
Instantaneous flow rate (PV) or
flow rate setpoint (SP) output
0 to 5 V/1 to 5 V/0 to 20 mA/ 4
to 20 mA output
18
A.GND
Analog ground
Analog signal common
17
FLOW SP INPUT
Setpoint flow rate (SP) voltage
input
0 to 5 V/1 to 5 V/0 to 20 mA/ 4
to 20 mA input
16
MODE INPUT
External 3-way switching input 3-way switching input
(OPEN/GND/5 V)
15
DI3
External contact input 3
2-way switching input
(OPEN/GND)
14
DI2
External contact input 2
13
DI1
External contact input 1
12
EV2 OUT
Event output 2
Open collector non-insulated
output
11
EV1 OUT
Event output 1
10
ALM OUT
Alarm output
9
D.GND
Digital ground
Digital signal common
8
DB
RS-485 communications DB
Do not connect on models
without the communications
function.
7
DA
RS-485 communications DA
6
D.GND
Digital ground
Digital signal common
5
TEST
For test
Do not use.
4
POWER GND
Power supply ground
Connect two wires each in
parallel to the power sup-
ply to reduce voltage drop
caused by wiring resistance.
3
POWER GND
Power supply ground
2
POWER (24 V)
Power (24 V DC)
1
POWER (24 V)
Power (24 V DC)
z
Wiring
•
Power supply
4
3
2
1
+
-
24 V DC
POWER GND
POWER GND
POWER (24 V)
POWER (24 V)
•
RS-485 communications (for models with optional RS-485 only)
or 9 D.GND
DA
DB
8
7
6
DB
DA
SG
Note
•
For details on the connection method of RS-485 communication,
please refer to
Digital Mass Flow Controller Model MQV9005/9020/9
050/9200/9500/0002/0010/0020/0050/0100/0200/0500 User's Manual
for Communication Functions
(CP- SP-1197E).
Summary of Contents for Micro Flow MQV0005
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