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CR7075 TWO-STAGE LIGHTING CONTROLLER
Wiring
CAUTION
Electrical Shock or Equipment Damage Hazard.
Can shock individuals or short equipment
circuitry.
Disconnect power supply before installation.
IMPORTANT
• All wiring must agree with applicable codes,
ordinances and regulations.
• When wiring the input power, apply only one source
of power to the CR7505A.
• With line-voltage loads, the power and load voltage
must be the same.
Refer to chart on the inside of the controller cover or Fig. 3 for
locating the power inputs, photocell sensor inputs, TOD and
load relay terminals. Refer to Fig. 4 through 7 for typical wiring
and application examples.
NOTES:
—
The photocell sensor has no polarity.
—
Wire to terminal strip T2, terminals 4 and 5.
—
Access to the terminals can be gained through
standard conduit knockouts (A-E) located around
the perimeter of the enclosure.
—
Use knockout A only for the photocell sensor
and TOD wiring.
—
Photocell wires should be at least 18 AWG two
conductor. If not run in watertight conduit, use
suitable insulation for outdoor wiring.
—
Shielded wiring is not required.
The Two-Stage Lighting Control System consists of
two components:
— CR7075 Two-Stage Lighting Controller.
— C7057 Cadmium Sulfide Photocell Sensor.
This system offers independent series 60 control of two
separate lighting banks based on user determined ambient
light intensity level via a single sensor.
Set point indexing is relative. The SET-RUN switch removes
the integrating time delay (short cycle protection) circuitry in
the SET position. In the RUN position (normal operation) there
is a 30 ±10 second time delay for both light fall and light rise
initiated relay action.
Two independent Time Of Day (TOD) inputs are provided to
override a relay energized condition of either output. This
function is generated by a contact closure from an EMS
controller or time clock with normally open contacts, i.e.,
W7505, S7005, etc., between terminals 1 and 2 (stage 1) and
terminals 2 and 3 (stage 2) of terminal strip T2 (Fig. 6 and 7).
These inputs have priority over any time delay action.
63-2180—1
C
CAUTION
ONE POWER SOURCE ONLY
LINE POWER
B
120
COM
VAC
A
Fig. 3. Knockout locations and internal device layout.
WHITE
L1
BLACK
L2
1
T.O.D. 1
T.O.D. 2
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
Fig. 4. Wiring for 120 or 240 Vac input and load.
4
D
OUTPUT 1
OUTPUT 2
240
N0
COM NC
N0
COM NC
VAC
SET
RUN
LIGHT LEVEL
6
5
6
5
4
7
7
3
8
8
T.O.D. 1
9
2
9
T.O.D. 2
10
1
10
POWER
STAGE 1
STAGE 2
SENSOR
LOAD 1
CAUTION
ONE POWER SOURCE ONLY
LINE POWER
OUTPUT 1
OUTPUT 2
120
240
COM
N0
COM NC
N0
VAC
VAC
SET
RUN
LIGHT LEVEL
6
5
4
7
1
3
8
T.O.D. 1
2
9
2
T.O.D. 2
10
1
3
POWER
STAGE 1
4
SENSOR
5
E
4
3
2
1
M1040
LOAD 2
COM NC
6
5
4
7
3
8
9
2
1
10
STAGE 2
M1043
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