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ION 7500 / ION 7600 User’s Guide I/O Specifications
Chapter 6 - Hardware Reference Page 169
I/O Specifications
Digital Inputs
AI4
AO4
AI3 A03
AI2 A02
AI1 AO1
Rear View of Meter
Analog connections from
external transducers
0to20mAor0-1mA
Analog Connections to
analog transducers
0 to 20mA: 500 Ohm load Max
-1 to 1mA: 10k Ohm load Max
Digital connections from
external relays or pulse counter
50 VDC Max
External Dry Contacts
(polarity for SSR
contacts shown)
AWG 12 to 14 (3.3 to 2.1 mm )recommended; wire sizes will vary depending on application
2
DI1
DI2
DI3DI4DI5DI6
DI7
DI8
DICOM
AI1
+ -
AO1
OUTCOM
I/O
C
ARD
Standard I/O
Locations
Specification Standard I/O (S1 to S8)
Expansion Card I/O
(D11 to D18)
Min Pulse Width 1 millisecond 20 milliseconds
Max Pulse Rate 20 Hz 25 Hz
Scan Time 1 millisecond for all inputs (min) 20 milliseconds for all inputs (min)
Isolation to Ground 300 VDC for 10 seconds, 60 Hz 300 VDC for 10 seconds, 60 Hz
Max Voltage 130 VDC (continuous) 50 VDC (continuous)
Timestamp Accuracy 1 millisecond 2 milliseconds
Connection Type Captured-wire
Wire Type AWG 14 to AWG 12