Contact Output Wiring - YOKOGAWA UT Advanced UT32A User Manual

17.4.6 Contact Output Wiring
IM 05P01D31-01EN
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 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
A safety
voltage circuit
Functional
insulation
A safety
voltage circuit
► When using auxiliary relay: 17.4.3 Control Output (Relay, Current, and Voltage Pulse) Wiring
UT35A/UT32A
Contact Output Equipped as Standard
Relay contact
ALM
AL3 104
COM 105
AL2 106
107
COM
AL1
108
COM 109
Contact rating: 240 V AC, 1 A
30 V DC, 1 A (resistance load)
CAUTION
This product
A safety A safety
voltage circuit voltage circuit
Functional
Reinforced insulation
insulation
A hazardous A hazardous
voltage circuit voltage circuit
Reinforced insulation
This product
A hazardous A hazardous
voltage circuit voltage circuit
Functional
Reinforced insulation
insulation
A hazardous A hazardous
voltage circuit voltage circuit
Reinforced insulation
17.4 Wiring
17
17-13