CR7075 TWO-STAGE LIGHTING CONTROLLER
63-2180—1
4
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.
Fig. 3. Knockout locations and internal device layout.
Fig. 4. Wiring for 120 or 240 Vac input and load.
CAUTION
ONE POWER SOURCE ONLY
LINE POWER
OUTPUT 1
OUTPUT 2
120
VAC
240
VAC
COM
N0
COM NC
N0 COM NC
M1040
LIGHT LEVEL
SET
RUN
POWER STAGE 1
STAGE 2
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
T.O.D. 1
T.O.D. 2
SENSOR
A
B
C
D
E
CAUTION
ONE POWER SOURCE ONLY
LINE POWER
OUTPUT 1
OUTPUT 2
120
VAC
240
VAC
COM
N0
COM NC
N0 COM NC
M1043
LIGHT LEVEL
SET
RUN
POWER STAGE 1
STAGE 2
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
T.O.D. 1
T.O.D. 2
SENSOR
1
2
3
4
5
T2
T.O.D. 1
T.O.D. 2
WHITE
BLACK
LOAD 2
LOAD 1
L1
L2
1
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.