YOKOGAWA UT55A - Contact Input Wiring

17-14
IM 05P01C31-01EN
17.4.6 ContactInputWiring
 CAUTION
1) Use a no-voltage contact (relay contact etc.) for external contacts.
2) Use a no-voltage contact which has ample switching capacity for the terminal's
OFFvoltage(approx.5V)andONcurrent(approx1mA).
3)Whenusingatransistorcontact,thevoltageatbothterminalsmustbe2Vor
less when the contact is ON and the leakage current must be 100 µA or less
when it is OFF.
4)
If there is a risk of external lightning surges, use a lightning arrester etc.
UT55A/UT52A
Contact Input Equipped as Standard
No-voltagecontact Transistor contact
DI3
DI2
DI1
COM
209
210
211
212
DI
Contact rating: 12 V DC, 10 mA or more
DI3
DI2
DI1
COM
209
210
211
212
DI
+
+
+
–
+5 V
+5 V
+5 V
Contact rating: 12 V DC, 10 mA or more
17.4 Wiring