background image

WIRING DIAGRAMS

TROUBLESHOOTING

Black

Red

Connecting Sensors to the GLS-SIM

Connecting Sensors to the DIN-IO8 or Equivalent

*

G   1   2   3   4

–––  NET

G   1   2   3   4

24  Y   Z   G

24  Y   Z   G

–––

To Control

System

–––

–––

I/O

DIN-IO8

NOTE

: The same Crestron power supply 

MUST be used to power both the sensors 
and the interface device (e.g., DIN-IO8). 
Otherwise, there is a risk of damage to the 
interface device. 

*

The following Crestron devices may be used 

to integrate the sensors into a Cresnet 
system by following the schematic shown 
here:

DIN-IO8 DIN-AP2  PAC2 

PRO2

AV2 CP2E MP2E CNXIO16
Any Crestron product with Versiports 

TYPICAL APPLICATION DIAGRAMS

GLS-LCL

GLS-LCL

GLS-SIM

Cresnet

®

DIN-IO8

Cresnet

®

Crestron

2-Series Control

Processor

Crestron

2-Series Control

Processor

Orange

Refer to the wiring 
diagrams in the right 
column.

Blue or 
White

Red

Black

Lights do not respond to 
change in ambient light 
level.

Incorrect wiring 
between sensor and 
GLS-SIM (or other 
compatible interface).

Improper sensor 
location.

Improper control 
system programming.

Verify that sensor is 
located such that it can 
detect the desired 
workspace light levels. 

Check logic in control 
processor, or contact 
Crestron for assistance.        

PROBLEM

POSSIBLE

CAUSE

CORRECTIVE

ACTION

24 1  2   G

Black

Red

Orange

–SENSOR–

––– NET–––

24  Y  Z  G

GLS-SIM

To Control

System

Use CRESNET-P or 

CRESNET-NP wire only

Use CRESNET-P or 

CRESNET-NP wire only

 

 

Make all connections as described in steps 3 through 7. 
Carefully feed the wires into the hole and press the Photocell 
body into the outer shell until the rim is flush with the shell.

 NOTE:

 If wiring is to be run exposed along the ceiling, carefully 

trim the plastic from the indentation in the side of the outer shell 
and lay the photocell wires through it before tightening the shell 
onto the ceiling.  

 

2.  To flush mount into the ceiling (only allows concealed wiring, 

the outer shell is not used), cut a 2" (51 mm) diameter hole 
through the ceiling. Make all connections as described in 
steps 3 through 7. Carefully feed the wires back through the 
hole and press the GLS-LCL into the hole until the rim is 
flush with the ceiling.

  
 

3.  Prepare the photocell lead wires by removing 3/4" (19 mm) 

of insulation from each lead to expose bare copper wire. 
Make sure the ends of wires are straight.

 

4.  Determine the length of low voltage wires needed to connect 

power to photocell. Use wires suitable for low-voltage wiring 
according to local electrical codes.

 

5.  Route low-voltage wires from GLS-LCL location(s) to 

interface device location(s). (Refer to the wiring diagrams in 
the next column.)

 

6.  Prepare low-voltage wires by removing 3/4" (19 mm) of 

insulation from each lead to expose bare copper wire. Make 
sure the ends of the wires are straight.

 

7.  Connect low voltage wires as shown in wiring diagrams in 

the next column (black to ground, red to power, and orange 
to the interface device). Twist strands of each separate wire 
connection tightly, and push firmly into appropriate wire 
connector. Screw connector on clockwise ensuring no bare 
conductor shows below the wire connectors. Secure each 
connector with electrical tape.

 

8.  Mount the GLS-LCL to the ceiling. INSTALLATION IS 

COMPLETE.

Integrating the GLS-LCL into a Cresnet System Via the GLS-SIM

Integrating the GLS-LCL into a Cresnet System Via the DIN-IO8 
or Equivalent*

*Refer to Wiring Diagrams for details on equivalent devices.

1

2

3

4

ON

If using
input 1
If using
input 2

1
2

3

4

ON
OFF

ON
OFF

DIP Switch Settings

All wires from sensor to GLS-SIM must 
be 24 AWG minimum. (If GLS-SIM is 
not located adjacent to the sensor, use 
CRESNET-P or CRESNET-NP wire.)

1

2

3

4

ON

CRESNET-P or

CRESNET-NP wire

recommended,

250 feet (76 m) max.

GLS-SIM DIP switch 
settings not correct.

Refer to the wiring 
diagrams in the right 
column for appropriate 
settings.

SPECIAL PROGRAMMING

To ensure correct processing of the sensor’s output from all interface 
devices (other than the GLS-SIM), the SIMPL program for the control 
processor must disable the pull-up resistor built in to the Versiport 
input connector. This is accomplished by setting the “pu-disable” 
digital input signal to a “1.” 

Crestron, the Crestron Logo, Crestron Green Light and Cresnet are trademarks or registered trademarks of 

Crestron Electronics, Inc. in the United States and other countries. EMerge Alliance and the EMerge Alliance 

logo are either trademarks or registered trademarks of EMerge Alliance Corporation in the United States and/or 

other countries. UL and the UL logo, are either trademarks or registered trademarks of Underwriters Laboratories, 

Inc. in the United States and/or other countries. Other trademarks, registered trademarks and trade names may 

be used in this document to refer to either the entities claiming the marks and names or their products. Crestron 

disclaims any proprietary interest in the marks and names of others

©2011 Crestron Electronics, Inc.

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