Brooks Instrument SLA7840 - Manual (Page 11)

1-5
Model SLA7840
Section 1 Introduction Installation and Operation Manual
X-PR-SLA7800-RT-eng
Part Number: 541B048AAG
August, 2009
Power Requirements:
Setpoint Input (Analog I/O option only)
0-5 Vdc: Input will accept signals to 5.5 Vdc (110% F.S.).
Input resistance: 360 Kohm min.
Flow Output (Analog I/O option only)
0-5 Vdc into 2 Kohm minimum load.
Output will indicate process variable up to 5.5 Vdc
(110% F.S.).
Valve Override Signal (Analog I/O option only)
Left floating/unconnected – instrument controls valve to command setpoint
Connected to signal at or above 5.0 Volts (maximum 16 Vdc)
– valve is forced open
Connected to signal at or below 0.0 Volts (minimum -1 Vdc)
– valve is forced closed
5 Volt Reference Signal (Analog I/O option)
For use with potentiometer command setpoint input
±0.2%, into 1K ohm (minimum load)
Mode Select Signal
Select whether to control in external sensor mode (pressure) or flow mode.
Open (disconnected) = unit operation in flow control mode
Closed (grounded) = unit operation in pressure control mode
External Sensor Input
0-10 Vdc: Input will accept signals to 10.2 Vdc.
Input resistance = 480 Kohm nominal.
Watts, typical Watts, max.
Analog I/O option 3.6 4.0
DeviceNet I/O option 6.9 7.6