GE BAKER HUGHES Masoneilan SVi 1000 Quick Start Manual page 60

The maximum voltage that can be applied to the digital switch outputs is 30 VDC. This is an open
circuit parameter (the digital switch is in the open state). Under open circuit conditions, the
switch current will be less than 0.200 mA.
The switch maximum current rating is 1 A. When the switch is ON, the typical switch voltage is
 1V.
When the switch is on (closed) the external voltage must be dropped across the load (Figure 33).
Inductive Load, Solenoid, Incandescent Lamp Configuration
Load is designed to limit current through the switch to < 1 A.
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SVi1000 Switch Output:  1 V
with switch ON
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Figure 33 Simplified Switch Installation Drawing: Correct Configuration
60 | =BHGE
CAUTION
CAUTION
LOAD
Consult with qualified personnel to ensure that
electrical requirements for the switch are met.
The load must be designed such that the current in
the circuit is 1 A at all times. Some 3rd party
devices, such as incandescent lamps or solenoids,
require surge and back EMF protection to prevent
voltage spikes.
If the load is inductive (solenoid,
incandescent lamp, etc.), then install a
Freewheel or Flyback diode to prevent
switch damaging EMF voltage spikes.
© 2019 Baker Hughes, a GE company, LLC. All rights reserved.
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External
Voltage
Source
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