Guide to controls installation – Flowline LC8X Thermo-Flo User Manual

Page 4

Step Four

Step Five

GUIDE TO CONTROLS

INSTALLATION

1. Power indicator:

This green LED lights when AC power is ON.

2. Relay indicator:

This red LED will light whenever the con-

troller energizes the relay, in response to the proper condition at
the switch input 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
Common (COM) terminal, and the device to the Normally Open
(NO) or Normally Closed (NC) terminal as required. The
switched device should be a noninductive load of not more than
10 amps; for reactive loads the current must be derated or protec-
tion 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 termi-
nal will be open.

5. Time delay:

Use potentiometer to set delay from 0.15 to 60 sec-

onds. Delay occurs during switch make and switch break.

6. Input indicators

: Use these LEDs for indicating Flow or No-

Flow status of switch. For NC wiring, an Amber LED indicates
No-Flow and no LED indicates Flow. For NO wiring, an Amber
LED indicates Flow and no LED indicates No-Flow.

7. Invert switch:

This switch reverses the logic of the relay control

in response to the switch: conditions that used to energize the
relay will now de-energize the relay and vice versa.

8. Latch switch (LC82):

This switch determines how the relay

will be energized in response to the two sensor inputs. When
LATCH is OFF, the relay responds to switch Input 2A only; when
LATCH is ON, the relay will energize or de-energize only when
both switches (2A and 2B) are in the same condition (Flow or No-
Flow). 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 24 VDC, 50 mA power supply (con-
nected to the red wire of a Flowline flow switch), and (-) is the
common ground path from the switch (connected to the black
wire). Also, the (S) is a 14 VDC, 25 mA supply (connected to the
white wire). If polarity between the red and black wires is
reversed, the switch will change from NC to NO.

Panel DIN Rail Mounting:

The controller may be mounted by either a back panel using two
screws through mounting holes located at the corners of the controller
or by snapping the controller on 35 mm DIN Rail.

Note:

Always install the controller in a location where it does not

come into contact with liquid.

Connecting N-channel Switches to Input Terminals:

Please note a difference between Flowline flow switches (N-channel,
P-channel and Relay). Use only the N-Channel or Relay switches
with the LC80 series of controller. Wire the Red wire to the (+) ter-
minal and the Black wire to the (-) terminal. Wire the White wire to
the (S). See the illustration below to indicate wiring for your switch.
Reversing Red and Black wire will change switch from NC to NO.
Note: connect the Shield wire on the Flow switch to the GND termi-
nal if required.

STANDARD
CONTROLLER

R E L A Y 1

R E L A Y 2

P O W E R

I N P U T 1

I N P U T 2 A

I N P U T 2 B

- +

I N V E R T

D E L A Y

I N V E R T

D E L A Y

LATCH

ON OFF

I N P U T 1

I N P U T 2 A

I N P U T 2 B

LATCH

ON OFF

FT10-___2

GT10-___2

NC Wiring

FT10-___2

GT10-___2

NO Wiring

INPUT

24 VDC
100 mA
Max

( - )

( + )

14 VDC
25 mA
Max

3.475"

2.2"

.275"

.225"