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QmB Series IP40, IP66, IP66XP
2-9 Electrical Interfacing
2-6
All manuals and user guides at all-guides.com
Meter and Controller
Flow Output (Pins 2, 4 and 10)
Flow Output configuration is a factory selected option.
Each Quantim instrument is calibrated as either 0-5 Vdc
or 4-20 mA at the factory as specified when ordering.
Pin 2 indicates the flow rate, represented by a 0-5 Vdc signal
proportional to flow, if so configured. Recommended load on Pin 2 is
>1K ohm. Pin 4 indicates the flow rate, represented by a 4-20 mA signal
current proportional to flow, if so configured. Maximum series
resistance on Pin 4 is 500 ohms. Do not apply power to Pin 4. The
current and voltage signals are returned via Pin10.
Analog Setpoint Input (Pins 7, 8 and 1; Controller models only)
Signal Input configuration is a factory selected option.
The Mass Flow Controller can be used either with a current or
voltage setpoint as configured when ordered. If configured for current
(4-20 mA) setpoint, connect the setpoint signal to Pin 7 and the setpoint
return signal to Pin 1. Input impedence on Pin 7 is 250 ohms. Do not
apply power to Pin 7. If configured for voltage (0-5 Vdc) setpoint,
connect the setpoint signal to Pin 8 and the setpoint return to Pin 1.
Input impedence to Pin 8 is 200K ohms.
Power Supply (Pin 5 and Pin 9)
Both Mass Flow Meter and Controller models are connected via Pins 5
(+14 to +27 Vdc) and 9 (power supply common) on the customer
connector. See Section 5, Functional Specifications for current
requirement.
EMC note: The DC Input Port of the EUT is not entended to be connected to
a DC Distribution Network; therefore the DC Input Leads were tested as
I/O signal / control ports
Valve Override (Pin 12; Controller models only)
To open or close the control valve independently of the setpoint signal
(e.g. for process reasons), Pin 12 is available to carry a valve override
signal. Leave floating (i.e. not connected) to allow for normal control
operation. Input impedence on Pin 12 is >50K ohms.
>5 Vdc @ Valve Open
0 Vdc @ Valve Closed
Installation and Operation Manual
Part Number: 541B029AAG
X-CM-QmB-eng
June, 2017
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