YOKOGAWA UT55A - Power Supply Specifications and Isolation

19-8
IM 05P01C31-01EN
19.1HardwareSpecifications
19.1.15 PowerSupplySpecificationsandIsolation
• Power supply:
 Ratedvoltage: 100–240VAC(+10%/-15%),50/60Hz
       24VAC/DC(+10%/-15%)(for/DCoption)
• Power consumption:
       UT55A:18VA(DC:9VA,AC:14VAif/DCoptionisspecified)
       UT52A:15VA(DC:7VA,AC:11VAif/DCoptionisspecified)
• Data backup: Nonvolatile memory
• Powerholduptime:20ms(for100VACdrive)
• Withstanding voltage
 -Betweenprimaryterminalsandsecondaryterminals:2300VACfor1minute
 -Betweenprimaryterminals:1500VACfor1minute
 -Betweensecondaryterminals:500VACfor1minute
(Primary terminals: Power (*) and relay output terminals; Secondary terminals: Analog
I/O signal terminals, contact input terminals, communication terminals, and functional
grounding terminals.)
(*):Powerterminalsfor24VAC/DCmodelsarethesecondaryterminals.
• Insulation resistance
 Betweenpowersupplyterminalsandagroundingterminal:20MΩormoreat500V
DC
• Isolation specifications
`
PV (universal ) input terminals
Remote (universal) input terminals with direct input / Remote input terminals
Aux. analog (AIN2) input terminals
Control relay (contact point c / contact point a) / Triac output terminals
Alarm-1 relay (contact point a) output terminals
Alarm-2 relay (contact point a) output terminals
Alarm-3 relay (contact point a) output terminals
Position proportional relay output terminals
Contact input terminals (All)
RS-485 communication terminals (2 ports)
24 V DC loop power supply terminals
Contact output (transistor) terminals
Ethernet communication terminal
PROFIBUS-DP/DeviceNet/CC-Link communication terminals
Current transformer input terminals
The circuits divided by lines are insulated multually.
Control, retransmission (analog) output terminals
(not isolated between the analog output terminals)
Valve position (feedback) input terminals
Internal
circuits
Power
supply
Aux. analog (AIN4) input terminals