9
4. Wiring
Warning
Turn the power supply to the instrument OFF before wiring or checking.
Working on or touching the terminal with the power switched ON may result in severe injury
or death due to electrical shock.
Caution
• Do not leave wire remnants in the DCL-33A when wiring, because they could cause a fire or malfunction.
• Insert the connecting cable into the designated connector securely. Not doing so could cause
malfunction due to imperfect contact.
• Connect the AC power to the designated terminal as is written in this instruction manual. Otherwise it
may burn and damage the DCL-33A.
• Tighten the terminal screw using the specified torque. Excessive force could damage the terminal screw
and deface the case.
• Use a thermocouple and compensating lead wire that corresponds to the sensor input specification of this unit.
• Use the 3-wire RTD that corresponds to the sensor input specification of this unit.
• When using DC voltage and current inputs, be careful not to confuse polarity when wiring.
• For a 24 V DC power source, ensure polarity is correct.
• Keep input wires (Thermocouple, RTD, etc.) away from power source and load wires when wiring.
• Do not apply a commercial power source to the sensor connected to the input terminal nor allow the
power source to come into contact with the sensor.
• To prevent the unit from harmful effects of unexpected level noise, it is recommended that a surge
absorber be installed between the electromagnetic switch coils.
• This unit does not have a built-in power switch, circuit breaker and fuse. Therefore it is necessary to
install a power switch, circuit breaker and fuse externally near the controller.
(Recommended fuse: Time-lag fuse, Rated voltage 250 V AC, Rated current 2 A)
When using ferrules, use the following ferrules and crimping pliers made by Phoenix Contact GMBH & CO.
•
Recommended ferrules and tightening torque
Terminal
number
Terminal
screw
Ferrules with
insulation sleeve
Conductor
cross sections
Tightening
torque
Crimping pliers
1 to 4
M2.6
AI 0.25-8 YE
0.2 to 0.25 mm
2
0.5 to 0.6 N•m
CRIMPFOX ZA3
CRIMPFOX UD6
AI 0.34-8 TQ
0.25 to 0.34 mm
2
AI 0.5-8 WH
0.34 to 0.5 mm
2
AI 0.75-8 GY
0.5 to 0.75 mm
2
AI 1.0-8 RD
0.75 to 1.0 mm
2
AI 1.5-8 BK
1.0 to 1.5 mm
2
5 to 9
M2.0
AI 0.25-8 YE
0.2 to 0.25 mm
2
0.22 to 0.25 N•m
AI 0.34-8 TQ
0.25 to 0.34 mm
2
AI 0.5-8 WH
0.34 to 0.5 mm
2
Summary of Contents for DCL-33A
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