SICK WT-23-2 Serie Manual De Operación página 6

6 Devices with special features
7 Table : Fault diagnosis
8015974.YVM5 | SICK
Subject to change without notice
WT23-2P1121S01: Sensing range can be set between approx. 30 and 400 mm. The
detection of objects is heavily restricted in the 0 to 30 mm range, with special male
connector, 6-pin, JST, 06HR-4K: pin 1: L+, pin 2: not connected, pin 3: 0 V, pin 4: Q
WT23-2P2421S03: Sensing range max.: 50 to 1,300 mm on white (90% remission),
ambient operating temperature -30 to +60 °C
WTB23-2P2401S04: Sensing range max.: 30 to 1,600 mm on white (90% remission),
infrared light
WT23-201521S05: Sensing range max.: 30 to 1,300 mm on white (90% remission),
supply voltage: 10 to 30 V DC, power consumption: ≤ 50 mA, switching current (switch‐
ing voltage): 100 mA (20 V AC), 100 mA (30 V DC), switching output: semiconductor
relay, galvanically isolated, response time: ≤ 3 ms, switching frequency: 200 Hz
WT23-2P2421S06: Sensing range max.: 200 to 1,000 mm on white (90% remission),
response time: ≤ 6.25 ms, switching frequency: 80 Hz
WTB23-2P1121S07: Sensing range max.: 30...2,300 mm on white (90% remission)
WTB23-2P2461S08: Sensing range max.: 30 to 1,100 mm on white (90% remission),
response time: ≤ 6.25 ms, switching frequency: 80 Hz
LED indicator/fault pattern /
LED indicator/fault pattern
Green LED does not light up /
Green LED does not light up
Green LED does not light up /
Green LED does not light up
Green LED does not light up /
Green LED does not light up
WT(B)23-2: Yellow LED
flashes /
WT(B)23-2: Yellow LED flashes
DEVICES WITH SPECIAL FEATURES
Cause /
Cause
No voltage or voltage below
the limit values /
No voltage or voltage below
the limit values
Voltage interruptions /
Voltage interruptions
Sensor is faulty /
Sensor is faulty
Sensor is still ready for opera‐
tion, but the operating condi‐
tions are not ideal /
Sensor is still ready for opera‐
tion, but the operating condi‐
tions are not ideal
Measures /
Measures
Check the power supply,
check all electrical connec‐
tions (cables and plug connec‐
tions) /
Check the power supply,
check all electrical connec‐
tions (cables and plug connec‐
tions)
Ensure there is a stable power
supply without interruptions /
Ensure there is a stable power
supply without interruptions
If the power supply is OK,
replace the sensor /
If the power supply is OK,
replace the sensor
Check the operating condi‐
tions: Fully align the beam of
light (light spot) with the
object. / Clean the optical sur‐
faces . / Readjust the sensitiv‐
ity (potentiometer) (teach-in) /
Check sensing range and
adjust if necessary; see
graphic F. / H. /
Check the operating condi‐
tions: Fully align the beam of
light (light spot) with the
object. / Clean the optical sur‐
faces . / Readjust the sensitiv‐
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