YOKOGAWA UM33A - Terminal Wiring Diagrams

IM 05P03D21-11EN page 3/8
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 indicator 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.
• 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.
• For the alarm relay output and power terminal connections, use
heat-resistant cables.
• 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
• 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 alarm 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Specications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
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
DC Relay Wiring
R
External DC power supply
Relay
O.C
UM33A
UM’s contact
Diode
(Mount it directly
to the relay coil
terminal (socket).)
Relay
(Use one with a relay coil rating
less than the UM’s contact rating.)
AC Relay Wiring
UM33A
R
UM’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 UM’s
contact rating.)
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.
■ UM33A
301-306
201-212
101-112
306 305 304 303 302 301
212 211 210 208 207 204 203
112 111 110 109 106 105 104108 107 103
202 201
102 101
E1-terminal area
PV
PV input
(Equipped
as standard)
TC input


202
203
RTD input
A
B
b
201
202
203
Voltage (mV, V) input


202
203
Current (mA) input


203
204
Factory default: PV input type is undefined.
RET
Retransmission output
(Equipped as standard)
Retransmission output
4-20 mA DC or
0-20 mA DC


Default: 4-20 mA DC
Default: PV
retransmission
Load resistance 600 Ω or less
207
208
15 V DC loop power supply
14.5-18.0 V DC
(Max. 21 mA DC)


207
208
Can be used for 15 V DC loop
power supply when not used for
retransmission output.
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
UM
104
105
106
107
108
109
ALM4
(Suffix code:
Type 2=1, 2 or 3)
Contact output
Contact rating: 250 V AC, 3 A
30 V DC, 3 A (resistance load)
AL4
(24 V AC/DC power supply:
Optional suffix code /DC)
Power supply
Allowable range:
100-240 V AC (±10%)
(free v(oltage)
50/60 Hz shared
100-240 V AC power supply
N
L
110
111
112
24 V AC/DC power supply


110
111
112
N
L
RS-485
RSB(+)
RSA(-)
SG
RS - 485 communication/24 V DC loop power supply

24 V DC loop power supply
21.6-28.0 V DC
(Max. 30 mA DC)

301
302
303
305
306
RS485/LPS24
(Suffix code: Type 2=1 and
with optional suffix code /LP)

24 V DC loop power supply
21.6-28.0 V DC
(Max. 30 mA DC)

24 V DC loop power supply
(Suffix code: Type 2=0 or 2
and with optional suffix code
/LP)
305
306
LPS24
RS-485
SDB(+)
SDA(-)
RDB(+)
RDA(-)
SG
RS - 485 communication
301
302
303
304
305
RS485
(Suffix code:
Type 2=1 and
without optional
suffix code /LP)
(Suffix code: Type 2=3)
Contact output
External contact output
DO12
DO11
DO13
DO14
DO15
COM
Common
UM
301
302
303
304
305
306
DO
Transistor contact rating: 24 V DC, 50 mA
The function of each contact output can be changed.
Alarm-6 output
( PV low limit)
Alarm-5 output
(PV high limit)
Alarm-8 output
( PV low limit)
FAIL
Alarm-7 output
(PV high limit)
DI
(Equipped as standard)
Contact input
Contact rating: 12 V DC, 10 mA or more
External contact input
DI2
DI1
COM
Common
DI2
DI1
COM
+5V
+5V
No-voltage
contact
Transistor
contact
UM
UM
210
211
212
210
211
212
The function of each contact input can be changed.
ON: PV peak and bottom values reset
OFF → ON: Latch release
101
102
Relay contact output
103
NC
NO
COM
Alarm-4
output
( PV low limit)
AL4