Installation & Maintenance Manual
SI unit-CANopen compatible
Type EX250-SCA1A
The unit and this manual contain essential information
to protect users and others from possible injury and property
damage and to ensure correct handling.
Please confirm that you fully understand the meaning of the
following messages (signs) before reading the text, and always
follow the instructions.
Please read the Installation & Maintenance Manual for related
apparatus and understand it before operating the actuator.
Do not disassemble, modify (including change of printed
circuit board) or repair.
An injury or failure can result.
Do not operate outside of the specification range.
Fire, malfunction or damage can result.
Please use it after confirming the specification.
Do not use the product in environments with possible-
presence of flammable, explosive or corrosion gas.
Otherwise fire, explosion or corrosion can result.
The product is not designed to be explosion proof.
.Connect wires and cables correctly.
.Do not connect wires while the power is on.
.Do not lay wires or cables with the same wiring route as a power line or
high-voltage line.
.Verify the insulation of the wiring.
.Take proper measures against noise such as a noise filter when the
product is incorporated in equipment or devices.
.Select an operation environment according to enclosure(IP67).
.Take sufficient shielding measures when installing the product at the
following place.
(1)A place where a noise due to static electricity etc. is generated
(2)A place of high electric field strength
(3)A place possibly exposed to radioactivity
(4)A place near power cable
.Do not use the product nearby a place where an electric surge is
generated.
.Use the product equipped with a surge absorber when a surge-
generating load such as a solenoid valve is driven directly.
.Prevent foreign matter such as remnant of wires from entering the
product.
.Do not expose the product to vibration and impact.
.Keep the specified ambient temperature range (-10 to +50
º
C
).
.Do not expose the product to heat radiation from a heat source located
nearby.
.Use a precision screw driver with small flat blade when setting rotary
switch and DIP switch.
.Perform maintenance and check at regular intervals.
.Perform a proper functional check.
.Do not use the product with chemicals such as benzine and thinner.
Specification
Safety Instructions
Do not apply voltages exceeding 250V between a lead
wire and a metal fitting.
Pay attention to perform an insulation test because it could
damage the insulation of the lead wire and cause failure.
These instructions must be followed when using the
product in an interlocking circuit:
.Provide double interlocking through another system
such as mechanical protection.
.Check the product regularly to ensure proper operation.
Otherwise malfunction can cause an accident.
These instructions must be followed when performing
maintenance work:
.Turn off the power supply
.Stop the air supply, exhaust the residual pressure and
verify that the air is released before performing
maintenance work.
Otherwise it can cause injury.
Perform a proper functional check after completing
maintenance work.
Stop operation when an abnormality is observed or the product is
not working properly.
Safety cannot be assured due to unexpected malfunctions.
NOTE
The direct-current power supply should be a UL authorized power
supply.
1.Limited voltage current circuit in accordance with UL508
A circuit to which power is supplied by the secondary coil of a
transformer that meets the following conditions.
.Max. voltage(with no load): less than 30Vrms(42.4V peak)
.Max. current:(1)less than 8A(including when short circuited)
(2)limited by circuit protector (such as fuse) with the
following ratings
2.UL1310 compatible class 2 power supply unit or circuit of max.
30Vrms (42.4V peak) or less using a UL1585 compatible class 2
transformer as power supply. (Class 2 circuit)
Follow the instructions given below when handling the product.
Failure to follow instructions may damage the unit.
.Operate the product within the specified voltage range.
.Reserve a space around the unit for maintenance.
.Do not remove labels.
.Do not drop, hit or apply excessive shock to the product.
.Do not bend or apply tensile force to cables, or apply a force by placing
a heavy load on them.
General specification
Electrical and network specifications
Names and Functions of Individual Parts
Output equipment
connector
Indication and address
setting panel
Communication
connector
Ground terminal
Power supply connector
for output equipment,
SI unit and Input block
Input block connector
Body
.
Communication connector
To send and receive communication signals through CANopen line.
To receive the power supply for SI unit.
.
Power supply connector for output equipment, Input block
To supply power to the output equipment such as a solenoid
valve, and output block, Input block.
.
Output equipment connector
To connect the output equipment such as a solenoid valve and
output block.
.
Input block connector
To connect the Input block.
.
Indication and address setting panel
To provide LED's to indicate the condition of the unit, and the
setting of address and HOLD/CLEAR functions.
.
Ground terminal
To be connected to the ground.
Outline with Dimensions (in mm)
EX250-SCA1
SI
UNIT
PWR(V)
CAN
PWR
ADDRESS
1
0
EX250
BUS
PWR
64.4
72.16
74.9
63
17.5
42.5
59.8
16.5
46.5
Safety Instructions (continued)
Applicable solenoid valve series
EX250-TFL01GB
IMPORTANT MESSAGES
Read this manual and follow the instructions.
Signal words such as WARNING, CAUTION and NOTE, will be
followed by important safety information that must be reviewed
carefully.
Indicates a potentially hazardous situation
which could result in death or serious injury if
you do not follow instructions.
Indicates a potentially hazardous situation
which if not avoided, may result in minor injury
or moderate injury.
Provides you helpful information.
WARNING
CAUTION
NOTE
WARNING
CAUTION
No load voltage (V peak)
Max.current rating (A)
0 to 20 [V]
5.0
Above 20 to 30 [V]
100 / peak voltage
Item
Specification
Operating ambient temp.
-10 to +50
º
C
Operating ambient humidity 35 to 85% RH (No dew condensation)
Storage ambient temp.
-20 to +60
º
C
Vibration proof
10 to 57Hz 0.35mm (Constant amplitude)
57 to 150Hz 50m/s
2
(Constant acceleration)
Impact proof
100m/s
2
(peak), 11ms x three times in each
direction ± X, Y and Z
Noise immunity
Normal mode : ±1500V Pulse duration 1us
Common mode : ±1500V Pulse duration 1us
Radiation : ±1000V Pulse duration 1us
Withstand voltage
500V AC for 1min.
Insulation resistance
500V DC min 10M ohm
Operating environment
No corrosive gas and no dust
Weight
About 250g
IP protection
IP67
Item
Specification
Applicable system
CANopen CiA DS-301 V4.02 and
CiA DS-401
Power voltage
range
Current
consumption
Power for SI unit
Current consumption
18 to 30V DC (24VDC typical.)
100mA or less
Power for Input
Block
Current
consumption
19.2 to 28.8V DC
Depending on the number of Input
Block stations and sensor
specifications. Max 1.0A or less
Power for solenoid
valve
Current consumption
22.8 to 26.4V DC
Depending on the number of
solenoid valve stations and
specifications. Max 2.0A or less
Solenoid valve
connection
spec.
Output type
P-ch MOS-FET Open drain type
Connection load
Solenoid valve with protection
circuit for 24V DC and 1.5W or less
surge voltage. (made by SMC)
Insulation type
Opto coupler type
Residual voltage
0.3V DC or less
Node-ID setting range
1 to 63 (1 to 127 at the SW mode)
Baudrate setting range
(Transmission speed)
1000k,800k,500k,250k,125k,50k,
20k,10kbps
COB-Identifier
11bit ID(CAN2.0A)
Input /Output
32 points/32 points
Valve type
Valve Series
VQC series
VQC1000, VQC2000, VQC4000
SV series
SV1000, SV2000, SV3000
