YOKOGAWA UT55A User Manual

17-20
IM 05P01C31-01EN
17.4.7 ContactOutputWiring
 CAUTION
1) Use an auxiliary relay for load-switching if the contact rating is exceeded.
2) Connect a bleeder resistor when a small current is used, so that a current
exceeding 10 mA can be supplied.
3) The output relay has a limited service life. Be sure to connect a CR filter (for AC)
or diode (for DC) to the load.
4) If there is a risk of external lightning surges, use a lightning arr
ester etc.
5) Since the insulation provided to each relay output terminal is Functional
insulation, provide Reinforced insulation to the external of the device as
necessary
. (Refer to the drawing below.)
This product
Functional
insulation
A safety
voltage circuit
A safety
voltage circuit
This product
Reinforced insulation
Reinforced insulation
Functional
insulation
A hazardous
voltage circuit
A hazardous
voltage circuit
A safety
voltage circuit
A safety
voltage circuit
This product
Reinforced insulation
Reinforced insulation
Functional
insulation
A hazardous
voltage circuit
A hazardous
voltage circuit
A hazardous
voltage circuit
A hazardous
voltage circuit
► Whenusingauxiliaryrelay:17.4.4ControlOutput(Relay,Current,andVoltagePulse)Wiring
UT55A/UT52A
ContactOutputEquippedasStandard
Relay contact
AL3
AL2
AL1
COM
COM
COM
Contact rating: 240 V AC, 1 A
30 V DC, 1 A (resistance load)
104
105
106
107
108
109
ALM
17.4 Wiring

YOKOGAWA UT55A Specifications

General

Brand	YOKOGAWA
Model	UT55A
Category	Temperature Controller
Language	English