11
2.3
Relay Configuration
All relay contacts are located on the MPC35 Controller module. To access relay connections, simply remove the
right side cover of the MXHF. Always be cautious when opening up the MXHF, make sure the power is not
coming into the unit.
Relay
Function
Contacts State
(Factory setting)
Contacts State
when condition
occurs
Connections
S-C
Jumper Conf.
(Factory
setting)
1
Charge Complete
Normally Closed
Open
RY1
J104 (Pin 2-3)
2
Auto Watering Active
Normally Closed
Open
RY2
J108 (Pin 2-3)
3
Charge Active
Normally Closed
Open
RY3
J113 (Pin 2-3)
4
Alarm 1*
Normally Open
Closed
RY4
J115 (Pin 2-3)
5
Alarm 2*
Normally Open
Closed
RY5
J106 (Pin 2-3)
6
Not used
-
-
RY6
J117 (Pin 2-3)
The relays can be configured for normally closed or normally open contacts by setting up the jumpers J104,
J108, J113, J115, and J106. Relay 6 is not used. Refer to the table below.
Relay
Normally Closed
Normally Open
1
J104 (Pin 2-3)
J104 (Pin 1-2)
2
J108 (Pin 2-3)
J108 (Pin 1-2)
3
J113 (Pin 2-3)
J113 (Pin 1-2)
4
J115 (Pin 1-2)
J115 (Pin 2-3)
5
J106 (Pin 1-2)
J106 (Pin 2-3)
* Refer to section (3.8.6 Alarm Factory Settings) for more details
Figure 5 – MPC35 Controller Module
Relays
Jumpers
Relay
Contacts
