7
Getting Started
Note:
Power requirements vary based on analog configuration and valve type. Please
reference to the Factory OEM Mass Flow Devices specification sheet at
for
power requirements.
Pin
Function
1
Ground to force the valve to close
2
Ground to force the valve to open
3
Rx or B (+): Receives RS-232 (Rx) or RS-485 B (+) signals
4
Analog Setpoint Input (meters: Ground to tare)
5
Tx or A (-): Sends RS-232 (Tx) or RS-485 A (-) signals
6
Analog Signal Output: 0-5 Vdc output signal.
7
Power in: Powers the device
8
Ground: Common ground for power, digital,
communications, analog signals and alarms
9
Ground by default; alarm signal if unit has optional alarm
* The above pinout is applicable to all factory OEM devices with the DB9
connector. The availability of different output signals depends on the options
ordered. Optional configurations are noted on the unit’s calibration sheet.
