MN301520 Rev A1
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Getting Started
Step Four
GUIDE TO CONTROLS:
Below is a listing and the location of the different components for the controller:
1. Power
indicator:
This green LED lights when AC power is ON.
2.
Relay indicator:
This red LED will light whenever the controller energizes the relay, in response to the
proper condition at the sensor input(s) and after the time delay.
3. AC Power terminals:
Connection of 120 VAC power to the controller. The setting may be changed to 240
VAC if desired. This requires changing internal jumpers; this is covered in the Installation section of the
manual. Polarity (neutral and hot) does not matter.
4. Relay terminals (NC, C, NO):
Connect the device you wish to control (pump, alarm etc.) to these
terminals: supply to the COM terminal, and the device to the NO or NC terminal as required. The switched
device should be a non-inductive load of not more than 10 amps; for reactive loads the current must be
derated or protection circuits used. When the red LED is ON and the relay is in the energized state, the NO
terminal will be closed and the NC terminal will be open.
5. Time
delay:
Use potentiometer to set delay from 0.15 to 60 seconds. Delay occurs during switch make
and switch break.
6. Input indicators:
Use these LEDs for indicating WET or DRY status of switch. When switch is WET, LED
will be Amber. When switch is DRY, LED will either be Green for powered switches or OFF for reed
switches.
Note: Reed switches may be reversed for WET/OFF, DRY/Amber LED indication.
7. Invert switch:
This switch reverses the logic of the relay control in response to the switch(es): conditions
that used to energize the relay will now de-energize the relay and vice versa.
8. Latch switch (LC41 and LC42 series only):
This switch determines how the relay will be energized in
response to the two sensor inputs. When LATCH is OFF, the relay responds to sensor Input A only; when
LATCH is ON, the relay will energize or de-energize only when both switches (A and B) are in the same
condition (both wet or both dry). The relay will remain latched until both switches change conditions.
9.
Input terminals:
Connect the switch wires to these terminals:
Note the polarity:
(+) is a 13.5 VDC, 30
mA power supply (connected to the red wire of a FLOWLINE powered level switch), and (-) is the return
path from the sensor (connected to the black wire of a FLOWLINE powered level switch).
With powered
level switches, if the wires are reversed, the sensor will not work. With reed switches, wire polarity does
not matter.