SR501 EN Operation Manual
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2.3 Terminal port connection
Before opening the terminal, please be sure to switch-off the power
and pay attention to the local electricity supply rules.
Terminal layout of controller for electrical heater of 1500W
•
FU1
: the fuse of controller, AC250V/2A
•
Power input L, N
:
10A, for power connection, L: live wire, N: zero wire,
protective ground wire, please connect the ground reliably.
•
Output ports
-
HR: Electromagnetic relays, designed for on/off control of back-up
heating device, Max. Current: 10A ( @AC230V, for
1500W electrical
heater, @110VAC, for
750W electrical heater)
-
P1
: designed for anti-freezing heating cables, electromagnetic relay,
max. power is 500W.
-
R1
:
designed for the solenoid valve of water filling, output power is
DC12V, wire connection is not positive and negative difference.