CTEK Z1204 Relay Module - Manual (Page 9)

TN0019 – Z1216 I/O and Z1204 Relay Module
Hardware Configuration
TN0019 - 28 March, 2011
9
Z1204 Relay Connections
Note - Since the I/O connections on both USB and RS485 modules are identical the remainder of this
TechNote applies to both types of modules.
The Z1204 module provides 4 relays each capable of switching a 5 amp load at either 30VDC or
240VAC. The relays are managed under software control via the RS485 interface. Each relay has a
Normally Open (NO), a Normal Closed (NC), and a common connection. Figure 9 shows the relay
connection terminal block.
Figure 9 - Relay Connections
R1 - 4 - Relay Common connection
NO - Normally Open contact
NC - Normally Closed contact