IM 05P01C31-15EN page 3/12
Rated measurement input voltage: Max. 10 V DC
Rated transient overvoltage: 1500 V (*)
* This is a reference safety standard value for measurement category I of CSA/UL 61010-
1, and for measurement category O of IEC/EN 61010-2-030. This value is not necessarily a
guarantee of instrument performance.
• EMC standards:
Compliant with CE marking
EN 61326-1 Class A, Table 2 (For use in industrial locations),
EN 61326-2-3
* The instrument continues to operate at a measurement accuracy of within ±20% of the
range during testing.
EN 55011 Class A, Group 1
EN 61000-3-2 Class A
EN 61000-3-3
EMC Regulatory Arrangement in Australia and New Zealand (for all model
including LL50A)
EN 55011 Class A, Group 1
• KC marking:
Electromagnetic wave interference prevention standard, electromagnetic wave
protection standard compliance
■ Construction, Installation, and Wiring
• Dust-proof and drip-proof: IP66 (for front panel) (Not available for side-by-side
close mounting.)
• Material: Polycarbonate (Flame retardancy: UL94V-0)
• Case color: White (Light gray) or Black (Light charcoal gray)
• Weight: 0.5 kg or less
• External dimensions (mm):
UT55A: 96 (W) × 96 (H) × 65 (depth from the panel face)
UT52A: 48 (W) × 96 (H) × 65 (depth from the panel face)
(Depth except the projection on the rear panel)
• Installation: Direct panel mounting; mounting bracket, one each for upper and
lower mounting
• Panel cutout dimensions (mm):
UT55A: 92
+0.8/0
(W) × 92
+0.8/0
(H), UT52A: 45
+0.6/0
(W) × 92
+0.8/0
(H)
•
Mounting attitude: Up to 30 degrees above the horizontal. No downward titling allowed.
•
Wiring: M3 screw terminal with square washer (for signal wiring and power wiring)
■ 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 (UL, CSA)
Between primary terminals and secondary terminals: 3000 V AC for 1 minute (CE)
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
Control, retransmission (analog) output terminals
(not isolated between the analog output terminals)
Valve position (feedback) input terminals
Internal
circuits
Power
supply
The circuits divided by lines are insulated mutually.
Aux. analog (AIN4) input terminals
■ Environmental Conditions
Normal Operating Conditions:
• Ambient temperature: -10 to 50°C (side-by-side mounting: -10 to 40 °C)
If the CC-Link option is specified, 0 to 50 °C for UT55A, 0 to 40 °C for UT52A.
(side-by-side mounting: 0 to 40 °C for UT55A and UT52A with CC-Link option)
• Ambient humidity: 20 to 90% RH (no condensation allowed)
• Magnetic field: 400 A/m or less
• Continuous vibration at 5 to 9 Hz: Half amplitude of 1.5 mm or less, 1oct/min for 90
minutes each in the three axis directions
Continuous vibration at 9 to 150 Hz: 4.9 m/s
2
or less, 1oct/min for 90 minutes each
in the three axis directions.
• Short-period vibration: 14.7 m/s
2
, 15 seconds or less
• Shock: 98 m/s
2
or less, 11 ms
• Altitude: 2000 m or less above sea level
• Warm-up time: 30 minutes or more after the power is turned on
• Startup time: Within 10 seconds
*: The LCD (a liquid crystal display) is used for a display portion of this product.
The LCD has a characteristic that the display action becomes late at the low temperature.
However, the control function is not affected.
Transportation and Storage Conditions:
• Temperature: -25 to 70ºC
• Temperature change rate: 20ºC/h or less
• Humidity: 5 to 95% RH (no condensation allowed)
Effects of Operating Conditions
• Effect of ambient temperature:
Voltage or TC input: ±1 µV/ºC or ±0.01% of F.S./ºC, whichever is larger
Current input: ±0.01% of F.S./ºC
RTD input: ±0.05ºC/ºC (ambient temperature) or less
Analog output: ±0.02% of F.S./ºC or less
• Effect of power supply voltage fluctuation
Analog input: ±0.05% of F.S. or less
Analog output: ±0.05% of F.S. or less
(Each within rated voltage range)
E4-terminal area
E3-terminal area
E2-terminal area
PV
HBA
OUT
OUT2
E1-terminal area
PV input
TC input
RTD input
Voltage (mV, V) input
A
+
-
+
-
Current (mA) input
+
-
B
b
(Suffix code:
Output 1; -T)
(Option code /HA)
(Equipped
as standard)
Heater break alarm
Heater current detection input
CT1
CT2
COM
External contact output (transistor)
Transistor contact rating: 24 V DC, 50 mA
Heater break alarm-1
output
Heater break alarm-2
output
Common
Control output
101
102
Relay contact output
103
NC
NO
COM
Contact rating: 250 V AC, 3 A
30 V DC, 3 A (resistance load)
101
102
103
104
105
106
107
108
109
110
111
501
502
503
504
505
506
507
508
509
510
511
512
407
401
408
409
410
411
412
301
302
303
304
305
306
307
308
309
310
311
312
201
202
203
204
205
206
207
208
209
210
211
212
Current/voltage pulse output
0-20 mA DC,
4-20 mA DC,
Voltage pulse (12V)
+
-
Retransmission output
+
-
Default: 4-20 mA DC
Default: Undefined
0-20 mA DC,
4-20 mA DC
Cooling-side control output
Relay contact output
NC
NO
COM
Contact rating: 250 V AC, 3 A
30 V DC, 3 A
(resistance load)
101
-112
501
-512
401
-412
301
-312
201
-212
ALM
(Equipped
as standard)
Contact output
External contact output (relay)
AL3
AL2
AL1
Relay contact rating: 240 V AC, 1 A
30 V DC, 1 A (resistance load)
Alarm-3 output
(PV high limit)
Alarm-2 output
( PV low limit)
Alarm-1 output
(PV high limit)
Common
Common
Common
UT
104
105
106
107
108
109
202
203
201
202
203
202
203
203
204
15 V DC loop power supply
14.5-18.0 V DC
(Max. 21 mA DC)
+
-
511
512
510
511
512
507
508
509
511
512
511
512
Factory default: PV input
type is undefined.
OUT
Current/voltage pulse output
0-20 mA DC,
4-20 mA DC,
Voltage pulse (12 V)
+
Retransmission output
+
-
Default: 4-20 mA DC
Default: Undefined
0-20 mA DC,
4-20 mA DC
Control output
(Suffix code: Output 1; -A or -U)
15 V DC loop power supply
14.5-18.0 V DC
(Max. 21 mA DC)
+
-
207
208
207
- 208
207
208
Can be used for retransmission output or 15 V DC loop power supply when
current/voltage pulse output is not used for control output.
Current output range can be changed.
In Position proportional type, can be used for retransmission output or 15 V
DC loop power supply.
RET
Retransmission output
4-20 mA DC or
0-20 mA DC
15 V DC loop power supply
14.5-18.0 V DC
(Max. 21 mA DC)
+
-
+
-
Default: 4-20 mA DC
Default: PV
retransmission
Load resistance 600
Ω
or less
Retransmission output
(Option code /RT)
205
206
205
206
Can be used for 15 V DC loop
power supply when not used for
retransmission output.
DI
(Equipped as standard)
Contact input
Contact rating: 12 V DC, 10 mA or more
External contact input
DI3
DI2
DI1
COM
AUTO when DI1=ON
MAN when DI1=OFF
STOP when DI2=ON
RUN when DI2=OFF
Common
DI3
DI2
DI1
COM
+5V
+5V
+5V
No-voltage
contact
Transistor contact
Factory default: No function
UT
UT
209
210
211
212
209
210
211
212
Function can be assigned to the terminals with no function.
VALV
(Suffix code: Output 1=-P)
Position proportional control output
Resistance: 100
Ω
to 2.5 k
Ω
Feedback input
100%
0%
Relay contact output
HIGH
(direct)
LOW
(reverse)
COM
Contact rating: 250 V AC, 3A
30 V DC, 3 A
(resistance load)
507
508
509
510
511
512
-
Feedback input
Current (mA)
input
When feedback input is current
510
511
512
+
HAL1
HAL2
COM
UT
507
508
509
112
(24 V AC/DC power supply: Option code /DC)
Power supply
100-240 V AC power supply
N
L
Allowable range:
100-240 V AC (+10%/-15%)
(free voltage)
50/60 Hz shared
110
111
24 V AC/DC power supply
-
+
110
111
112
112
N
L
101
102
Triac output
103
NO
COM
Contact rating: 75 - 250 V AC
Allowable load current: 0.8 A
OUT
507
508
Triac output
509
NO
COM
Contact rating: 75 - 250 V AC
Allowable load current: 0.8 A
Triac
(Suffix code:
Output 1; -R or -U)
(Suffix code: Output 2; A or U)
(Suffix code: Output 2; R or U) (Suffix code: Output 2; T)
Wiring direction
6. Terminal Wiring Diagrams
CAUTION
• Do not use an unassigned terminal as the relay terminal.
• Do not use a 100-240 V AC power supply for the 24 V AC/DC
model; otherwise, the instrument will malfunction.
■ UT55A
5. How to Connect Wires
WARNING
• Wiring work must be carried out by a person with basic electrical
knowledge and practical experience.
• Be sure to turn OFF the power supply to the controller before wiring to
avoid an electric shock. Use a tester or similar device to ensure that no
power is being supplied to a cable to be connected.
• For the wiring cable, the temperature rating is 75 °C or more.
• As a safety measure, always install a circuit breaker (an IEC
60947-compatible product, 5 A, 100 V or 220 V AC) in an easily
accessible location near the instrument. Moreover, provide indication
that the switch is a device for turning off the power to the instrument.
• Install the power cable keeping a distance of more than 1 cm from other
signal wires.
• The power cable is required to meet the IEC standards concerned or the
requirements of the area in which the instrument is being installed.
• Wiring should be installed to conform to NEC (National Electrical Code:
ANSI/NFPA-70) or the wiring construction standards in countries or
regions where wiring will be installed.
• 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
CAUTION
• When connecting two or more crimp-on terminal lugs to the
single terminal block, bend the crimp-on terminal lugs before
tightening the screw.
• Note that the wiring of two or more crimp-on terminal lugs to the
single high-voltage terminal of the power supply and relay, etc.
does not comply with the safety standard.
CAUTION
• Provide electricity from a single-phase power supply. If the power is
noisy, install an isolation transformer on the primary side, and use a line
filter on the secondary side. When measures against noise are taken, do
not install the primary and secondary power cables close to each other.
• If there is a risk of external lightning surges, use a lightning arrester etc.
• For TC input, use shielded compensating lead wires for wiring. For RTD
input, use shielded wires that have low conductor resistance and cause
no significant differences in resistance between the three wires.
• Since the control output relay has a life span (resistance load of 100,000
times), use the auxiliary relay to perform ON/OFF control.
• The use of inductance (L) loads such as auxiliary relays, motors and
solenoid valves causes malfunction or relay failure; always insert a
CR filter for use with alternating current or a diode for use with direct
current, as a spark-removal surge suppression circuit, into the line in
parallel with the load.
• After completing the wiring, the terminal cover is recommended to use
for the instrument.
● Recommended Crimp-on Terminal Lugs
(A)
(F)
(ød
)
5.5 3.3
Recommended tightening torque: 0.6 N·m
Applicable wire size: Power supply wiring 1.25 mm
2
or more
Applicable terminal lug Applicable wire size mm
2
(AWG#)
(φ d)
(A)
(F)
M3
0.25 to 1.65 (22 to 16)
3.3
5.5
4.2
● Cable Specifications and Recommended Cables
Purpose
Name and Manufacturer
Power supply, relay contact outputs
600 V Grade heat-resistant PVC insulated wires, JIS C
3317(HIV), 0.9 to 2.0 mm
2
Thermocouple
Shielded compensating lead wires, JIS C 1610
For thermocouple input (PV input and remote input with direct
input), shielded compensating lead wire of cross-sectional area
less than or equal to 0.75 mm
2
is recommended. If the cross-
sectional area is wide, the reference junction compensation
error may be large.
RTD
Shielded wires (three/four conductors), UL2482 (Hitachi Cable)
Other signals (other than contact input/output)
Shielded wires
Other signals (contact input/output)
Unshielded wires
RS-485 communication
Shielded wires
Ethernet communication
100 BASE-TX (CAT-5)/10 BASE-T
PROFIBUS-DP communication
Dedicated cable for PROFIBUS-DP (Shielded two-wires)
DeviceNet communication
Dedicated cable for DeviceNet (Shielded five-wires)
CC-Link communication
Dedicated cable for CC-Link (Shielded three-wires)
PROFIBUS-DP/CC-Link Connector (wiring side) (Part number: A1987JT)
DeviceNet Connector (wiring side) (Part number: L4502BW)
Recommended tightening torque: 0.5 to 0.6 N·m
DC Relay Wiring
R
External DC power supply
Relay
UT55A, UT52A
UT’s contact
Diode
(Mount it directly
to the relay coil
terminal (socket).)
Relay
(Use one with a relay coil rating
less than the UT’s contact rating.)
AC Relay Wiring
UT55A, UT52A
R
UT’s contact
CR filter
(Mount it directly
to the relay coil
terminal (socket).)
External AC power supply
Relay
(Use one with a relay coil
rating less than the UT’s
contact rating.)
Transistor Output Wiring
power
+ –
UT
DO
Load
COM
