EFX48-xx Series with RM3-340/440 Installation and Operation Guide
140
Copyright © 2019 Eaton Corporation. All Rights Reserved.
IPN March 2019
Contact Rating (continuous) 0.25A @ 60V dc maximum
Connectors Screwless terminal blocks
Wire Size 0.2 – 0.5mm
2
[26 - 20 AWG]
Isolation Relay connections are isolated to 250V dc from all
other circuitry, earth and system common.
Digital Outputs
Number of Digital Outputs/Relays 3 (shared with Digital Inputs 1, 2 & 3)
Connection Arrangement Open drain with weak 47k internal pull-up to 5V,
referenced to BUS +ve (chassis)
Connectors Screwless terminal blocks
Wire Size 0.2 – 0.5mm
2
[26 - 20 AWG]
Isolation Relay connections are isolated to 250V dc from all
other circuitry, earth and system common.
Digital Inputs
Number of Digital Inputs 5 (shared with Digital Outputs 1, 2 & 3 and Analog
Inputs 4 & 5)
Connection Arrangement Digital Inputs 1, 2 & 3 expect an open drain, open
collector, relay or mechanical switch contact to
BUS +ve (chassis). A weak 47k internal pull-up
resistor to 5V is provided. Inputs are referenced to
BUS +ve (chassis).
Digital Inputs 4 & 5 expect an open drain, open
collector, relay or mechanical switch contact to
BUS +ve (chassis). An external pull-up to 3V3 or
5V is required. Inputs are referenced to BUS +ve
(chassis).
Connectors Screwless terminal blocks
Wire Size 0.2 – 0.5mm
2
[26 - 20 AWG]
Input Range 0V which is BUS +ve (chassis)
To
10V above BUS +ve (chassis)
Input Common Bus +ve
Input Protection Protected against damage from short circuit to bus
+ve or bus -ve
Analog Inputs
Number of Analog Inputs 2 (shared with Digital Inputs 4 & 5)
Connection Arrangement Analog Inputs 4 & 5 expect an input voltage
referenced to BUS +ve (chassis). For midpoint
monitoring this will be –ve and half the string
voltage. For the 10V range this will be +ve and up
to 10V above BUS +ve.
Connectors Screwless terminal blocks
Wire Size 0.2 – 0.5mm
2
[26 - 20 AWG]
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