2
of
18
LC900007
Rev
A2
INTRODUCTION
/
TABLE
OF
CONTENTS
Step
One
The
LC52
Series
Continuous
Relay
Controller
is
a
general
‐
purpose
level
controller
which
provides
single
tank
level
indication
with
dual
relays
and
a
repeater
4
‐
20
mA
output.
The
LC52
Series
features
both
a
single
12A
SPDT
and
a
single
12A
Latching
SPDT
relay.
This
package
allows
for
a
system
that
can
perform
automatic
operations
(fill
or
empty)
and
an
alarm
operation
(high
or
low).
The
LC52
series
can
also
be
a
controller
that
can
perform
dual
alarms
(2
‐
high,
2
‐
low
or
1
‐
high,
1
‐
low).
Package
the
controller
with
a
transmitter
that
provides
a
4
‐
20
mA
output
and
an
enclosure
to
protect
the
controller
from
the
elements.
Features
3.5
digit
LED
display
indicates
level
in
customer
engineering
units.
Fail
‐
Safe
relay
control
of
pumps,
valves
or
alarms
with
a
0.15
to
60
second
delay.
Polypropylene
enclosure
can
be
DIN
rail
mounted
or
back
panel
mounted.
Easy
setup
with
push
button
calibration
for
display
and
relay
settings.
AC
powered
Table
of
Contents
Specifications:
.........................................................................................................................................................
3
Dimensions:.............................................................................................................................................................
3
Safety
Precautions:
.................................................................................................................................................
4
Make
a
Fail
‐
Safe
System:
............................................................................................................................
5
Components:
...............................................................................................................................................
5
Installation:
............................................................................................................................................................
5
Getting
Started:
.......................................................................................................................................................
6
Features
of
the
Single
Input
High
or
Low
Alarm
Relay:
..............................................................................
6
Features
of
the
Latching
Relay
(Automatic
Fill
or
Empty):
.........................................................................
6
Guide
to
Controls:
.......................................................................................................................................
7
Electrical:
.................................................................................................................................................................
8
Wiring
to
Input
Terminals:
.........................................................................................................................
8
Setting
Input
Polarity:
.................................................................................................................................
9
Repeater
Output:
........................................................................................................................................
9
VAC
Power
Input
Wiring:
.........................................................................................................................
10
Changing
from
120
to
240
VAC:
...............................................................................................................
10
Relay
Input
Wiring:
...................................................................................................................................
10
Application
Exmaples:
...........................................................................................................................................
11
Low
Level
Alarm:
.......................................................................................................................................
11
High
Level
Alarm:
......................................................................................................................................
11
Automatic
Fill:
...........................................................................................................................................
12
Automatic
Empty:
.....................................................................................................................................
12
Programming:
......................................................................................................................................................
13
Appendix:
..............................................................................................................................................................
14
Controller
Logic:
........................................................................................................................................
14
Relay
Latching
Logic
Table:
.......................................................................................................................
14
Factory
Reset:
...........................................................................................................................................
14
Lockout
Function:
.....................................................................................................................................
16
Troubleshooting:
.......................................................................................................................................
15
Exercise:
...............................................................................................................................................................
16
Warranty,
Returns
&
Limitations:
.........................................................................................................................
18