Pin Name Electrical Specification
Signal Description
AO+
• Isolated output switch
• 5–24 VDC
• 100 mA maximum
• Resettable fuse
• Reverse polarity and transient overvoltage
protected
The Alarm Out signal pair is an isolated electronic
switch output. The switch closes when an alarm
condition occurs. The Alarm Out signal can be
activated by any of the alarm conditions described
above.
AO-
• Isolated return path for AO+ output
PS1+
• 24 VDC output source
• 100 mA maximum
• Resettable fuse
• Reverse polarity and transient overvoltage
protected
• PS2+ output on pin 31 is a separate circuit
The PS1+ and G1- pin pair provide 24 VDC, 100mA
power for external wiring to I/O signals. This pin pair
is not electrically isolated.
G1-
• Ground return and reference for the PS1+
24 VDC output source
GPI1+
• Isolated input
• 5–24 VDC
• 20 mA maximum
• 1.5 ms minimum pulse with reverse-polarity
protection
The General Purpose Input 1 signal triggers General
Purpose Output 1 when a 5–24 VDC signal is
applied across the GPI1+ and GPI1- pins. This signal
pair has reverse-polarity protection.
GPI1-
• Isolated return path for GPI1+ input
GPI2+
• Same as GPI1+ above
Refer to the General Purpose Input 1 signal
description.
GPI2-
• Same as GPI1- above
GPI3+
• Same as GPI1+ above
Refer to the General Purpose Input 1 signal
description.
GPI3-
• Same as GPI1- above
GPI4+
• Same as GPI1+ above
Refer to the General Purpose Input 1 signal
description.
GPI4-
• Same as GPI1- above
Continued on next page
Appendix A, Connector Pin Technical Data (continued)
I/O Connector (continued)
ValveMate 9000 Controller
65
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