Nexen PH 16 912085 - Manual (Page 6)

6
FORM NO. L-20140-G-0105
Photo Head
LE D
Re d
Black
Green
White
Cable 16 ft. [5m]
Red- Signal Output
Black- Signal COM
Shield
Green- +12 V Power
White- Power COM
Sensing
Array
ELECTRICAL CONNECTIONS
The PH 16 and PH 21 come with a 16 Ft. [5 m], 4 conductor
shielded cable.
Make the electrical connections to the Web Guide Controller
according to the instructions provided with the controller (See
Figure 5).
NOTE: The cable may be extended up to 500 Ft. [156.25 m],
using four conductor 18 AWG [0.9 mm] shielded cable.
MAINTENANCE
System accuracy can be affected by dust or dirt on the glass
surfaces of the light emitter and receiver. Periodically wipe
these surfaces with a soft, clean, dry cloth.
TROUBLESHOOTING
If the sensor fails to provide a signal to the Web Guide
Amplifier, check the following.
1. Determine if the amplifier is providing a 12 VDC excitation
signal to the Sensor.
2. If an excitation signal is present, check the LED for proper
operation.
3. If the LED is operating correctly, check the output voltage
of the sensor (See SPECIFICATIONS).
FIGURE 5
PH-16 and PH-21
SPECIFICATIONS
PH-16
Excitation --------------------------------------------------------------- 12 VDC
Output -------------------------------------------------------- OPEN, 350 mV
------------------------------------------------------------------ BLOCKED, 0 V
Measuring Width ------------------------------- ± 0.20 In. (±5.08 mm)
Sensitivity ------------------------------------------------ 0.004 In. [0.1 mm]
Weight ------------------------------------------------------- 2.5 Lbs. [1.1 kg]
Temperature Range --------------------------- 32
o –122 o F [0 o –50 o C]
PH-21
Excitation --------------------------------------------------------------- 12 VDC
Output -------------------------------------------------------- OPEN, 350 mV
------------------------------------------------------------------ BLOCKED, 0 V
Measuring Width ------------------------------- ± 0.20 In. (±5.08 mm)
Sensitivity ------------------------------------------------ 0.004 In. [0.1 mm]
Weight ------------------------------------------------------- 1.3 Lbs. [0.6 kg]
Temperature Range --------------------------- 32
o –122 o F [0 o –50 o C]
CAUTION
Wire continuity and shielding integrity must be maintained
when extending the cable.
WARNING
Do not disassemble the Edge Guide Sensor. Attempting
to disassemble the Edge Guide Sensor will void the
warranty. Contact Nexen if replacement parts or service
is required. There are no customer replaceable parts.