YOKOGAWA UP55A User Manual

17-17
IM 05P02C41-01EN
Installation and Wiring
17
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 1 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 arrester 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
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
Note: The alarm output should always be used
with a load of 1 mA or more.
17.4Wiring

YOKOGAWA UP55A Specifications

General

Brand	YOKOGAWA
Model	UP55A
Category	Controller
Language	English