Daikin SUT Series User manual

SE-04753 [Operation Manual] 2/49
Hybrid Hydraulic System
[Super Unit]
SUT03S15L07-10-F
SUT03S30L07-10-F
SUT SERIES
Operation Manual
DAIKIN INDUSTRIES, LTD.
Oil Hydraulics Division

SE-04753 [Operation Manual] 2/49
DAIKIN INDUSTRIES, LTD.
<Safety Precautions>
Before using this product
Give consideration to make users thoroughly understand the contents of this operation manual.
Please incorporate the contents of this operation manual in operation manuals for your machine using this product.
To ensure proper operation of this unit, be sure to read this operation manual and all other attached documents
carefully, to have a thorough understanding of the equipment, safety information and all other precautions before
installation, operation and maintenance/inspection of this unit.
Be sure to keep this operation manual, attached documents and delivery specifications in place, so that you can read
them whenever required.
For detailed explanation of the unit, all figures andphotographs included in this manual showthe unit without covers
or safety shields. To operate this unit, be sure to mount the covers and shields in the specified manner, and observe
the operating procedures described in this manual.
The contents of this operation manual are subject to change appropriately for product improvement, specification
change or easier operations.
The latest version of this manual is available through DAIKIN Oil Hydraulics Division Internet Service
(DHCnet HomePage) (http:// www.dhcnet.daikin.co.jp:8100/).
This operation manual should be used as a reference that provides safety instructions for DAIKIN Hydraulic Unit. In
addition to this manual, please prepare safety references for your machine to ensure safe operations and maintenance
in accordance with various standards and norms.
Conventions of safety instructions in this manual
In this manual, safety instructions are classified into three categories: “ DANGER”, “ WARNING”and
“ CAUTION”.
DANGER: Improper handling regardless of this indication causes an urgently hazardous condition that may
result in death or serious injury.
WARNING: Improper handling regardless of this indication causes a potentially hazardous condition that may
result in death or serious injury.
CAUTION: Improper handling regardless of this indication causes a potentially hazardous condition that may
result in medium or slight injury, or property damage.
Even an item indicated as “ CAUTION”may result in a serious accident depending on the situation. All
instructions given in this manual include important information. Be sure to observe all of them.
Safety precautions
General precautions
DANGER
Transportation, installation, piping, wiring, operations, maintenance and inspections must be conducted by qualified
personnel.
During the above work, wear protective gear required for safe work (work clothes, safetyband, helmet, safetyshoes,
gloves and so on).
Do not use this unit under conditions other than those specified in the catalog or delivery specifications.
CAUTION
Be sure to conduct daily inspections (described in this manual or attached documents).
Do not apply external force to this unit. (Do not step on, or pound on this unit.) Otherwise, you may suffer from
injury, or the unit may be damaged.

SE-04753 [Operation Manual] 3/49
DAIKIN INDUSTRIES, LTD.
<Escape Clauses>
DAIKIN shall not be responsible for any damage attributable to a fire, earthquake, third party’s action and other
accidents, as well as customer’s intention, misuse or use under abnormal conditions.
DAIKIN shall not be responsible for any damage incidental to use of this product or impossibility to use this product
(loss of business profit, discontinuation of business).
DAIKIN shall not be responsible for any accident or damage attributable to negligence in observing the instructions
given in the operation manual or delivery specifications.
DAIKIN shall not be responsible for anydamage attributable tomalfunction caused by combinations of this unit and
external equipment.
<Limitations on Applications>
If a failure or malfunction of this unit may directly threaten human life, or this unit is used for equipment that may
cause injury to the human body, such an application must be considered depending on the case.
This unit has been manufactured under strict quality control. However, when it is used for important equipment, the
equipment must be provided with a safety device to prevent malfunction of this unit from resulting in serious
accident or damage.

SE-04753 [Operation Manual] 4/49
DAIKIN INDUSTRIES, LTD.
Contents
[1. Introduction]...............................................................................................................5
[2. Features and Structure]................................................................................................5
[3. Description on Model Identification Code]..................................................................6
[4. Specifications and Operating Conditions]....................................................................7
[5. Precautions for Use]....................................................................................................8
[6. Names of Unit Components] .......................................................................................9
[7. Hydraulic Circuit].......................................................................................................10 to 11
Hydraulic circuit diagram
Components
Piping
[8. Precautions for Operation, Transportation and Installation]..........................................12 to 13
Precautions for operation
Precautions for transportation
Precautions for installation
[9. Preparations for Operation] .........................................................................................14 to 23
Filling hydraulic oil
Electric wiring
I/O signal cable specifications
[10. Test Run]....................................................................................................................24
[11. Operation Panel Operating Procedure].........................................................................25 to 34
Outline of functions
Description on individual modes
Shift between individual modes
Operating procedure for each mode
a) Monitor mode
b) Setting mode
c) Alarm mode
Alarm code display list
[12. Maintenance]..............................................................................................................35 to 40
Periodic inspection
Cleaning and replacement
Oil cooler maintenance procedure
Oil filling port (air breather) maintenance procedure
Suction strainer maintenance procedure
[Attachment: Safety Valve Adjusting Procedure]..................................................................41
[Attachment: Power-ON External I/O Signal Timing Chart].................................................42 to 48

SE-04753 [Operation Manual] 5/49
DAIKIN INDUSTRIES, LTD.
[1. Introduction]
Thank you for selecting IPM Motor Drive Hydraulic Unit <Super Unit>.
Using the oil hydraulic technology and energy-saving IPM motor drive system that DAIKIN originally developed, the
IPM Motor Drive Hydraulic Unit <Super Unit> provides overwhelmingly excellent energy conservation
performance and advanced functions.
Before using the SUT Series <Super Unit>, please read this manual thoroughly, and handle and maintain this unit
properly, so that this unit can retain excellent performance for a long period.
The components of this unit may be modified for the purpose of quality/performance improvement or other reasons. In
such a case, some parts of this product may be different from those described in this manual.
[2. Features and Structure]
Multi-stage speed control/Multi-stage pressure control, and shockless control functions
The Super Unit enables multi-stage pressure control/flow rate control by selecting 16 patterns of P-Q
characteristics that have been registered in the controller from the master machine (via a contact input).
The Super Unit enables shockless control by setting/adjusting the rising/falling time at changes of the P-Q
characteristics.

SE-04753 [Operation Manual] 6/49
DAIKIN INDUSTRIES, LTD.
[3. Description on Model Identification Code]
(a) (b) (c) (d) (e) (f) (g) (h)
SUT 03 S ** L 07 - 10 - F - ******
(a) Series name
SUT: SUT series
(e) Maximum operating pressure
07: 7.0 MPa
(b) Tank capacity
03: 30 L
(f) Design No.
Advances according to model change.
(c) Pump type
S: Single gear pump
(g) Use/No use of noise filter
F: Noise filter is used.
(d) Maximum pump discharge rate
15: 15.2 L/min
30: 28.5 L/min
(h) Non-standard control No.
MFG. No
(i) (j) (k) (l)
* * ** - **-*****
(i) Design No.
(k) Software revision history
(j) Hardware revision history
(l) Serial No.
<Output characteristic>
[SUT03S15L07] [SUT03S30L07]
P-Q characteristic （15.2L/min_7.0MPa）
0
2
4
6
8
10
12
14
16
0 1 2 3 4 5 6 7 8
Pressure（MPa）
Flow rate（L/min）
P-Q characteristic （28.5L/min_7.0MPa）
0
5
10
15
20
25
30
0 1 2 3 4 5 6 7 8
Pressure（MPa）
Flow rate（L/min)

SE-04753 [Operation Manual] 7/49
DAIKIN INDUSTRIES, LTD.
[4. Specifications and Operating Conditions]
Major specifications
SUT03S15L07 SUT03S30L07
Maximum operating pressure (MPa) 7.0
Maximum discharge rate (Note 1) (L/min) 15.2 28.5
Operating pressure adjusting range (MPa) 1.5 to 7.0
Operating discharge rate adjusting range (Note 1) (L/min) 2.4 to 15.2 3.4 to 28.5
Power supply (Note 2) 3200V/50Hz, 200V/60Hz, 220V/60Hz
External input signal (5ch) Photo-coupler insulation, 24 VDC (27 VDC max.) 5 mA/ch
Alarm output (1ch) Relay output
Contact capacity: 30 VDC, 0.5 A (Resistance load) 1c contact
External output
signal
Digital output (2ch) Photo-coupler insulation, open-collector output,
24 VDC, 50 mAmax./ch
Standard paint color DAIKIN white (Munsell code 5Y7.5/1)
(Note 1)
Before shipment from the factory, the unit has been set to the maximum discharge rate.
(The maximum discharge rate is a theoretical value, not a guaranteed value.)
For details on the factory settings, see the initial values given in the setting range table on p. 32.
For other specifications, see the delivery specification drawing (model drawing).
The upper limit of the pressure adjusting range is higher than the maximum operating pressure. However, make
sure that the pressure setting does not exceed the maximum operating pressure shown above.
This hydraulic unit incorporates a safety valve, which has been set to work at 7.5 MPa (maximum operating
pressure + 0.5 MPa).
However, if the surge pressure during actuator operation must be minimized, adjust the pressure setting according
to “Attachment: Safety Valve Adjusting Procedure”on p. 41.
(Note 2)
Power supply voltage fluctuation tolerance range is 10%. Even if the power supply voltage fluctuations are
within the tolerance range, when the power supply voltage fluctuates in the positive direction, the regenerative
overload (alarm stop) may occur in response, depending on the master machine operating conditions and load
conditions.
Operating conditions
Hydraulic oil (Note 3) Dedicated mineral hydraulic oil / Wear-resistant hydraulic oil
(For recommended brands, see DAIKIN “Hydraulic Equipment General Catalog
(HK196)”.)
Viscosity grade: ISO VG 32 to 68 Viscosity range: 15 to 400 mm2/s
Pollution degree: NAS Class 9 or lower level
Tank oil temperature 0 to 60C (Recommended operating temperature range: 15 to 50C) (Note 4)
Operating ambient temperature 0 to 35C
Storing ambient temperature –20 to 60C
Humidity 80% RH or less
Installation place Indoor (Be sure to fasten the unit with bolts.)
Be sure to mount a no-fuse breaker and earth leakage breaker.
Make sure that the electric wiring conforms to European Norm EN60204-1.
If you frequently turn ON/OFF the power supply for this unit, the controller
service life will be remarkablydeteriorated. If you int
end to start and stop the unit
frequently, use the control stop function of this unit.
Others
Be sure to connect the ground terminal.
(Note 3)
This unit can use only mineral hydraulic oil. (Water-containing or synthetic oil such as water-glycol cannot be
used.)
(Note 4)
When the tank oil temperature exceeds the recommended operating temperature range, pressure pulsation may be
increased, or the discharge rate may be decreased. However, such phenomena do not indicate abnormality.

SE-04753 [Operation Manual] 8/49
DAIKIN INDUSTRIES, LTD.
[5. Precautions for Use]
(1) The motor pump of this hydraulic unit is mounted via vibration suppressing rubber that prevents motor pump
vibration from being conveyed to the unit.
The pump should be connected to the unit with a hose.
(2) This hydraulic unit is equipped with a fan motor to cool the hydraulic oil and the motor.
To ensure spaces for air intake and exhaust, do not place an obstacle at 10 cm or shorter distance from the fan
motor air intake and exhaust planes.
(3) This hydraulic unit incorporates a check valve that provides an orifice in the discharge line. If high response is
required for machine pressure release or other purpose, the machine must be provided with an additional pressure
release circuit.
If the load volume is large, you may hear a fluid flow sound from this orifice when the unit is stopped. However,
this phenomenon does not indicate abnormality.
(4) This hydraulic unit uses an IPM motor, which generates counter-electromotive force during changeover
(regenerative operation). If the motor is frequently turned ON/OFF in the operating condition that easily generate
counter-electromotive force, it causes regenerative overload, resulting in unit stop.
(5) This hydraulic unit is equipped with a safety valve.
This safety valve has been set to a specified pressure before shipment. However, the set pressure of the safety
valve maydecrease while the machine is repeatedly used for a long period, or due to contaminants in thehydraulic
oil.
If this unit is continuously used with the safety valve activated, it may output an alarm due to a temperature rise
and so on.
In this case, re-adjust the safety valve pressure setting according to “Attachment: Safety Valve Adjusting
Procedure”on p. 41.
For protection of peripheral equipment (actuator, pressure gauge, etc.) of the master machine, it is recommended
that the safety valve pressure setting should be “Unit pressure setting + 0.5 MPa”in order to suppress surge
pressure.

SE-04753 [Operation Manual] 9/49
DAIKIN INDUSTRIES, LTD.
[6. Names of Unit Components]

<Unit top view>

<Unit front view>
Discharge port
(Rc3/8)
Controller
Oil filling port (Air breather)
Operation panel
Stop valve
Drain port
(Rc3/4)
Return port
(Rc1)
Return port
(Rc1)
Oil cooler
Hydraulic pump
Tank
Motor
Oil level gauge
Safety valve black
Safety precaution
nameplate
Unit
nameplate
Transport nameplate
Bolt
nameplate

SE-04753 [Operation Manual] 10/49
DAIKIN INDUSTRIES, LTD.
[7. Hydraulic Circuit]
Hydraulic circuit diagram
Components
Part No. Name
1 Tank
2 Suction strainer
3 Stop valve
4 Oil level gauge
5 Oil filling port (Air breather)
6-1 Controller
6-2 Inverter drive pump
7 Oil cooler

Rc3/4
Rc1
P T1 T2 DR1
Rc3/8 Rc1
M
Above the
oil surface
Hose
Hose
C/R
M
Hose
Rc1/2
7
6-1
6-2
1 2 5 4
3

SE-04753 [Operation Manual] 11/49
DAIKIN INDUSTRIES, LTD.
Piping
This hydraulic unit is equipped with two return ports (submerged in the oil), one drain port (above the oil surface) and
one discharge port. Connect pipes with these ports as required.
Each piping port has been covered with tapered cap (vinyl cap) before shipment.
Fasten each pipe connection by winding sealing tape.

<Unit top view>
CAUTION
This hydraulic unit incorporates a check valve. If an additional inline check valve is mounted to the discharge port,
resonance occurs, which may have bad influence on the master machine. Therefore, do not use an inline check
valve.
Discharge port
(Rc3/8)
Return port
(Rc1)
Drain port
(Rc3/4)
Return port
(Rc1)

SE-04753 [Operation Manual] 12/49
DAIKIN INDUSTRIES, LTD.
[8. Precautions for Operation, Transportation and Installation]
In order to suppress vibration and noise, vibration suppressing rubber is attached to each mounting leg. Before
shipment, it is fastened with wing bolts (M8 x L30: at two places) in order to suppress transport vibration.
Precautions for operation
Before operation, remove the fastening wing bolts (M8 x L30: at two places). Operating the unit without
removing the wing bolts may increase vibration and noise.
Precautions for transportation
During transportation, be sure to mount the motor base to the base with the wing bolts (M8 x L30: at two places)
to fasten it securely in order to protect the vibration suppressing rubber, by referring to the drawing at the right
below.
DANGER
If the hydraulic unit is lifted by any parts (e.g. pump pipes) other than the hook slots, the unit may fall or turn over.
Check the weight of the hydraulic unit, and make sure that it does not exceed the rated load capacity of each lifting
sling.
WARNING
During transportation, make sure that the unit can be evenly lifted by the hook slots at four places.
During transportation using lifting slings, never come close to the unit. If the unit falls or turns over, you may suffer
from injury.
CAUTION
Avoid transporting the hydraulic unit with hydraulic oil contained in the tank.
(This may cause oil leak, or malfunction due to air intrusion.)
During transportation, hold the hydraulic unit securely so that it will not be moved by vibration or external force.
<Weight table> (Hydraulic oil is not included)
Model SUT03S15L07 SUT03S30L07
Weight 65 kg 67 kg
Hook slot
(at four places)
Fastening wing bolts
(at theback of theunit: two places)



Transport nameplate
Bolt
nameplate

SE-04753 [Operation Manual] 13/49
DAIKIN INDUSTRIES, LTD.
Precautions for installation
Securing air intake/exhaust space
Do not place an obstacle that blocks the oil cooler’s air intake or air exhaust within 10 cm from the unit end
surface.
Install the unit in a well-ventilated place to prevent the area around the unit from being stuffed with hot air. Make
sure that the intake air temperature does not exceed the specified ambient temperature range (35C or lower
temperature).
WARNING
If the hydraulic unit is used in a place without an air intake/exhaust space, or a place stuffed with hot air, the oil
cooler/fan motor’s heat exchanging function will deteriorate, causing the hydraulic oil and equipment to become
extremely hot.
If you accidentally touch the hot parts, you may get burns.
CAUTION
If the hydraulic unit is used in a place without an air intake/exhaust space, or where hot air is stuffed around the unit,
the motor and controller become hot, causing the equipment service life to be remarkably shortened.
When the motor or controller becomes hot, the temperature protection function is activated to stop operation.
(When the motor or controller becomes extremely hot, the alarm/warning signal will be output.)
If the hydraulic unit is continuously used at a high temperature, the hydraulic equipment (pump, valves, etc.) will
have defects or shortened service life, as well as the electric components described above.
Using the hydraulic unit at a high temperature accelerates deterioration of the hydraulic oil, resulting in shortened
service life.
Fastening onto a level plane
Install the hydraulic unit on a level base or level floor.
Fasten the hydraulic unit securely so that it will not shake.
For the installation procedure and location, see the delivery specification drawing (model drawing).
WARNING
Unless the hydraulic unit is fastened with bolts, it may be turned over or moved by reaction force under the oil
pressure in the pipe. Be sure to fasten the unit.
CAUTION
If the hydraulic unit is installed on an inclined plane, oil leak or air intrusion occurs, resulting in abnormal sound or
shortened service life of the equipment.
Be sure to install the unit on a level plane.

10 cm or more
Air
intake
10 cm or more

10 cm or more

Exhaust

SE-04753 [Operation Manual] 14/49
DAIKIN INDUSTRIES, LTD.
[9. Preparations for Operation]
Filling hydraulic oil
Remove the cap of the oil filling port (air breather) by turning it counterclockwise, and fill clean hydraulic oil
(pollution degree: NAS Class 9 or lower level) into the tank. Set the oil level so that the float of the level gauge
is between the red and yellow lines.
Use the hydraulic oil conforming to the specifications on p. 7.
Make sure that the stop valve is opened.
Oil level setting rangeTank capacity
(L) Yellow line (upper limit) Red line (lower limit)
30 30 L 23 L
CAUTION
[1] Operating the hydraulic unit with no oil in the tank causes pump seizure or wear, which may result in pump
damage.
[2] Make sure that the stop valve is opened. If the stop valve is not opened, the oil cannot be supplied into the pump.
This causes pump seizure or wear, which may result in pump damage.
[3] During initial operation of the machine, oil will be supplied into the hydraulic circuit of the machine. Be careful
about a decrease in oil level in the tank.
[4] The oil level in the tank may largely fluctuate depending on the machine hydraulic circuit. This may result in oil
leak from the tank, or decrease in oil level.
Stop valve is opened.

Oil level
gauge
Stop valve
Be sure to open it before use.
(Lever is horizontal: Open, Lever is vertical: Closed)

Cleaning door tightening
precaution nameplate

SE-04753 [Operation Manual] 15/49
DAIKIN INDUSTRIES, LTD.
Electric wiring

<Unit top view>
DANGER
In order to protect the electric circuit against short-circuiting and over-current and prevent electric shocks, the
hydraulic unit main power supplymust be equipped with a safetydevice (no-fuse breaker, earth leakage breaker, etc.)
conforming to European Norm EN60947-2.
(For capacity of each model, see the table below.)
Use a power supply connection device with 3-phase contact distance of at least 3 mm in the switch-OFF status.
For connection of the ground terminal, ensure at least Class 3 grounding condition.
(Connect the ground terminal directly without using a breaker.)
Be sure to complete installation of the hydraulic unit before wiring.
Before wiring work, be sure to turn OFF the main power supply breaker, and make sure that the power is interrupted.
Be sure not to connect the power supply cable to the I/O signal terminals.
Do not apply an excessive power supply voltage higher than the specified power supply voltage to the hydraulic unit.
No thermal relayis required. However, if a thermal relayis used, the hydraulic unit maymalfunction due to influence
of inverter switching.
CAUTION
The hydraulic unit incorporates an overcurrent protection function. Therefore, it does not need an overcurrent
protection thermal relay.
[Rated current and breaker setting]
Power supply voltage and frequency
Model 3200V 50Hz 3200V 60Hz 3220V 60Hz Breaker setting
SUT03S15L07 7.9 7.7 7.1 15A
SUT03S30L07 10.9 10.7 9.7 15A
Controller small cover
Controller

SE-04753 [Operation Manual] 16/49
DAIKIN INDUSTRIES, LTD.
Wiring procedure
To connect the main power supply and I/O signal cables, remove the small cover of the controller.
<Remove the controller small cover by loosening the cross recessed head machine screws (two
M4 screws, Tightening torque: 0.6 Nm).>

<When the unit controller small cover is removed>
DANGER
[1] To access inside of the controller, follow the procedure described below.
i) Turn OFF the hydraulic unit main power supply.
(Turn OFF the power supply circuit breaker.)
To prevent erroneous operation during wiring work, post an “Operation Prohibited (During Work)”sign on the
power supply circuit breaker.
ii)Remove the controller cover after elapse of at least five minutes.
The controller uses a large-capacitance capacitor. If you connect cables with the capacitor charged, you may get
electric shock. Before removing the controller cover, be sure to leave the controller for at least five minutes to
discharge electricity from the capacitor.
[2] Before turning ON the power supply to start operation, mount all controller covers.
<Unit controller>
Controller small cover
Cross recessed head
machine screws


Ground terminal
Motor cable
terminal
I/O signal
terminal
Ground terminal
Power supply
terminal block

SE-04753 [Operation Manual] 17/49
DAIKIN INDUSTRIES, LTD.
<How to use the cable clamp>
1. Loosen the tightening cap, and pass the cable through the clamp. Before this step, remove the controller fastening
screw in advance.
2. Insert the cable into the controller through the controller’s wiring hole.
3. Tighten the controller fastening screw to fasten the cable clamp to the controller.
4. Tighten the tightening cap to fasten the cable. The cable sheath protrusion length should be approx. 2 to 3 mm.


Controller fastening screw
Wiring hole

Controller fastening screw Tightening cap
Sheath protrusion length: 2 to 3 mm


SE-04753 [Operation Manual] 18/49
DAIKIN INDUSTRIES, LTD.
Connecting the main power supply cable
(1) Connect the main power supply cable to the controller through the controller’s wiring hole. Use a cable clamp
suitable for the wiring hole, whose protection rating should be IP54 or higher level. (Wiring hole diameter: 28
mm)
[1] Connect the ground cable to the controller’s ground terminal.
[2] Connect the power supply cable to individual terminals on the power supply terminal block. (Tightening
torque: 1.0 Nm)
<When the unit controller small cover is removed> <Enlarged view of power supply terminal block>
DANGER
Use an AC power supply conforming to the power supply specifications of this product.
Use a power supply cable conforming to the power supply capacity. (See the table below.)
Do not connect the power supply cable to the ground terminal.
The ground terminal is connected with the motor frame. Ensure Class 3 or higher grounding condition.
When unsheathing the cable, be careful not to damage the conductors.
Be careful that the cable conductors do not protrude from the terminal block.
CAUTION
For connection of the power supply cable, attach a crimp terminal to the tip of the cable.
The cable inserted into the cable clamp should be a multi-core cable as those recommended below.
If two or more cables are inserted into the clamp, the cable clamp does not conform to the specified protection rating
because of a gap between the cables and the cable clamp.
When connecting the cable, be careful not to drop a screw into the housing.
Model Cable size Recommended cable Recommended crimp
terminal
Recommended cable
clamp
SUT03S15L07
SUT03S30L07
2.5 mm2or more
(AWG14 or larger size)
CE362 2.5 mm2 x 4 cores
(manufactured by KURAMO)
TMEV-2-4
(manufactured by NICHIFU)
OA-W2216
(manufactured by
OHM ELECTRIC)
* For the power supply cable, use the 2451EC/H05RR-F cable.

Power supply terminal block
Wiring hole

Ground terminal
Power supply
terminal block

SE-04753 [Operation Manual] 19/49
DAIKIN INDUSTRIES, LTD.
<Power supply cable connecting procedure>
[1] Unsheathe the cable by approx. 80 mm.
[2] Remove the inner sheath so that the core wires are
exposed by 8 to 10 mm.
[3] As shown on the right, crimp the round crimp
terminal with insulation sheath byusing a dedicated
tool.
[4] After looping each cable by one turn, connect it to
the terminal block.
CAUTION
If the crimp tool is not suitable for the crimp terminal, the cable will come off the terminal due to a crimp failure
during operation. This results in short-circuiting or burnout of the circuit caused by abnormal heating.
Approx. 1 mm

80 mm

SE-04753 [Operation Manual] 20/49
DAIKIN INDUSTRIES, LTD.
Connecting the I/O signal cable
(1) Pass the cable through a cable clamp, and connect it through the controller’s wiring hole.
(Wiring hole diameter: 21 mm)
(2) Check the specifications of individual signal lines (see p. 21), and connect the cable to the I/O signal terminal
block.
<When the unit controller small cover is removed> <Enlarged view of I/O signal terminal block>
DANGER
Do not connect the I/O signal cable to the power supply terminal block.
When unsheathing the cable, be careful not to damage the conductors.
Be careful that the cable conductors do not protrude from the terminal block.
CAUTION
After checking the specifications of individual signal lines (see p. 21), connect the cable to the I/O signal terminal
block.
The cable inserted into the cable clamp should be a multi-core cable as those recommended below.
If two or more cables are inserted into the clamp, the cable clamp does not conform to the specified protection rating
because of a gap between the cables and the cable clamp.
Terminate the shielded cable securely, and connect it to the shielded cable connection terminal.
Model Cable size Recommended cable Recommended cable clamp
SUT03S15L07
SUT03S30L07
0.5 to 0.3 mm2
(AWG20 to 22) KCV-36SB 0.3 mm2 (manufactured by KURAMO)
(manufactured by OHM ELECTRIC)
OA-W1611
Applicable wire outer diameter:
9 to 11 mm
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[1] Loosen the screw with a screwdriver.
[2] Check the unsheathed length of the cable, and insert it all the way
into the terminal so that the conductors will not become loose.
[3] Tighten the screw with a screwdriver.
[4] Pull the cable lightly to make sure that it is securely connected.
Procedure for connecting the cable to the terminal block
I/O signal terminal block
Wiring hole
Shielded cable
connection terminal
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Unsheathed length of the cable: 6 mm
6
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