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3.6 Communication Module Connections
Please refer to Figure 3-13 for the Communication Module illustration.
The module provides VCC, RS-485, dry contact, and EPO terminals for different
use. The maximum supply current of VCC(16V) is 0.8A. The maximum input
rating of dry contact connector is 250Vac/ 30Vdc/ 9A.
RS -485
GND
VCC
Terminal
Resistor
CT Port
3.7 RS-485 Connection
The pin definition and data format of RS-485 is shown in Table 3-2.
Installers should switch ON the terminal resistor when single inverter is installed.
PIN
Function
1
VCC(+16V)
2
GND
3
DATA+
4
DATA-
5
DATA+
6
DATA-
Maximum supply current of VCC(+16V): 0.8A
Table 3-3 : Pin definition and data format of RS-485
-
+
-
+
Figure 3-13 : Communication module
31
EPO & Digital Inputs & DRMs
Dry Contact
Data Format
1
2
Baud rate: 19200
3
Data bits: 8
4
Stop bit: 1
5
Parity: N/A
6
Installation
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