SP60/SP80 User Manual V1.3
TBB Power Co.,Ltd
11
2.5 Auxiliary output
The SP60/80-150 has a configurable auxiliary output (relay contact, nominal switching capacity
is 2A up to 30Vdc), of which can be used for load management, or switch devices such as alarm,
or a ventilation fan on/off.
Only one function can be designed at a time. Please refer to chapter 5.3 “Configuring the
auxiliary contact”
The auxiliary contact output was designed to energize a low current circuit.
Connecting to a high amperage device will possibly damage the equipment and it is
out of warranty.
L
L
o
o
a
a
d
d
m
m
a
a
n
n
a
a
g
g
e
e
m
m
e
e
n
n
t
t
:
:
The auxiliary contact can be used to switch a relay coil on/off to disconnect or reconnect loads
depending on battery voltage (reflecting battery SOC). This function can help optimize the
system performance.
V
V
e
e
n
n
t
t
i
i
l
l
a
a
t
t
i
i
o
o
n
n
f
f
a
a
n
n
:
:
If a ventilation fan was installed in the battery compartment, the auxiliary contact can be
configured to activate the fan upon gassing voltage reached during charging.
A
A
l
l
a
a
r
r
m
m
s
s
:
:
The auxiliary contact can be configured to switch the alarm circuit or indicator light on upon
preset condition occurs, such as MPPT failure, battery low voltage, high PV input voltage etc.