Eaton easyE4

10. easyE4 communication Connection to other devices
10.16 easy communication modules
Connecting the power supply
For EASY-COM-RTU-…, use cable protection (F1) with a capacity of at least 1A.
Specifications for connection to supply voltage
POW
24 V DC
0 V
F1 ≧ 1 A
+24 V 0 V
EA
S
Y
-COM-RTU-...

Fig. 348: Connecting the EASY-COM-RTU-… power supply
Config
Modbus R
TU
POW / RUN
+24 V P
O
W
0 V
+24 V 0 V P
O
W
COM B+ A-


Description
POW
+24 V
Supply voltage +24 V
0 V
Supply voltage 0 V



RS-485
COM
Modbus RTU common
B+
Modbus RTU + (D1*)
Amp
Modbus RTU - (D0*)
Tab. 134: Terminal assignment EASY-COM-RTU-…
There are two sets of terminals for power.
These two sets are internally connected.
Make sure to connect +24 V and 0 V only once!
The second set of terminals is provided as a way to easily chain the
power supply if you want to use it to power additional devices as well.
Conditions for Underwriters Laboratories Inc. (UL) listing.
The EASY-COM-RTU-… module must be protected externally by
l
a UL489 approved circuit-breaker or
l
a UL 248-14 approved fuse or
l
a UL Class RK5/K5 fuse
with rated operational currents of max. 4A.
The circuit breaker or the fuses must be specified at least for the voltage
range of the EASY-COM-RTU-…-module 24 V
DC
(-15/+20%) (SELV).
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