E4
MAINTENANCE
Cleaning:
When wiping out the
SDC25/26
, use the soft and dried
cloth. Do not use a detergent or an organic solvent like
thinner or benzene.
Parts replacement: Do not replace the parts.
Fuse replacement: On AC models, when replacing the fuse for the power,
make sure that the replacement fuse complies with
applicable standards. Use a time lag fuse (T) compliant
with IEC127 and rated at 250 V, 0.5 A.
MODEL SELECTION TABLE
Basic
model
No.
Mounting Control
output
PV
input
Power
supply
Optional
functions
Additional
processing
Specifications
1
2
1
2
C25
48 × 96 size model
C26
96 × 96 size model
T
Panel mounting type
Control output 1
Control output 2
R0
Relay contact output
N.O.
None (relay
output for control
output 1: N.C.)
V0
Voltage pulse output *
1
—
VC
Voltage pulse output *
1
Current output
VV
Voltage pulse output *
1
Voltage pulse output *
1
C0
Current output
—
CC
Current output
Current output
U
Universal
A
AC model (100 to 240 V AC) 50/60 Hz
D
DC model (24 V AC/24 V DC)
1
Event relay output: 3 points
2
Event relay output: 3 points, Auxiliary
output (current output)
*2
4
Event relay output: 2 points, (independent
contact)
*2
5
Event relay output: 2 points (independent
contact), Auxiliary output (current output)
0
None
*3 1
Current transformer input: 2 points
Digital input: 4 points
*3 2
Current transformer input: 2 points
Digital input: 4 points
RS-485 communication
0
No additional treatment
D
Inspection certificate provided
*1. For SSR drive
*2. Can not be selected for DC model.
*3. Current transformer is sold separately.
Y
Complying with the traceability certificate
0 None
A UL-marked product
SPECIFICATIONS
z
PV input
Thermocouple:
K, J, E, T, R, S, B, N (JIS C1602-1995)
PL II (Engelhard Industries Data (ITS90))
WRe5-26 (ASTM E988-96 (Reapproved 2002))
Ni-Ni·Mo (ASTM E1751-00)
PR40-20 (Johnson Matthey Data)
DIN U, DIN L (DIN 43710-1985)
Gold iron chromel (Hayashidenko Data)
Resistance temperature detector (RTD): Pt100 (JIS C1604-1997)
JPt100 (JIS C1604-1989)
DC voltage:
0 to 10 mV, −10 to +10 mV, 0 to 100 mV,
0 to 1 V, 1 to 5 V, 0 to 5 V, 0 to 10 V
DC current:
0 to 20 mA, 4 to 20 mA
Sampling cycle:
300 ms
Indication accuracy:
±0.3 %FS±1 digit, ±0.6 %FS±1 digit for a
negative area of the thermocouple (at ambient
temperature 23±2 °C)
Allowable input:
• −0.5 to +12 V (thermocouple, RTD, DC,
voltage)
• 30 mA max. or 4 V max. (DC current)
More than the allowable input voltage or cur-
rent may damage this device.
z
Digital input
Number of input points:
4 points
Input type:
Dry contact or open collector
Allowable ON contact resistance:
Max. 250 Ω
Allowable OFF contact resistance:
Min. 100 kΩ
Allowable ON residual voltage:
Max. 1.0 V
Terminal current (ON):
Approx. 7.5 mA (in case of short circuit).
Approx. 5.0 mA (in case of contact resistance
250 Ω)
Minimum hold time:
600 ms or more
z
Current transformer input
Number of input points:
2 points
Input object:
Current transformer with 100 to 4,000 turns
(availability is by 100-turn units)
Current measurement lower limit:
0.4 A AC (800 turns, 1 time)
Formula; Number of turns ÷ (2000 × number
of power wire loops)
Current measurement upper limit: 50.0 A AC (800 turns, 1 time)
Formula; Number of turns ÷ (16 × number of
power wire loops)
Allowable measured current:
70.0 A AC (800 turns, 1 time)
Formula; Number of turns ÷ (16 × number of
power wire loops) × 1.4
Display range lower limit:
0.0 A AC
Display range upper limit:
70.0 A AC (800 turns, 1 time)
Formula; Number of turns ÷ (16 × number of
power wire loops) × 1.4
Display accuracy:
±5 %FS
Display resolution:
0.1 A AC
z
Control Output
• Relay output
Contact rating:
Control output 1: N.O. contacts,
250 V AC/30 V DC, 3 A (resistive load)
Control output 2: N.C. contacts,
250 V AC/30 V DC, 1 A (resistive load)
Life:
N.O. contacts, 50,000 cycles min.
N.C. contacts, 100,000 cycles min.
Min. switching specifications:
5 V, 100 mA
Min. open/close periods:
250 ms
• Voltage pulse output (for SSR drive)
Open circuit voltage:
19 V DC±15 %
Internal resistance:
82 Ω±0.5 %
Allowable current:
Max. 24 mA DC (a higher current might cause
output circuit failure)
Min OFF time/ON time:
1 ms when the time proportional cycle time is
less than 10 s.
250 ms when the time proportional cycle time
is more than 10 s.
• Current output
Output type:
0 to 20 mA DC or 4 to 20 mA DC
Allowable load resistance:
Max. 600 Ω
Output accuracy:
±0.1 %FS (at ambient temperature 23±2 °C)
±1 %FS at 0 to 1 mA
z
Auxiliary output
Output type:
0 to 20 mA DC or 4 to 20 mA DC
Allowable load resistance:
Max. 600 Ω
Output accuracy:
±0.3 %FS (at ambient temperature 23±2 °C)
±1 %FS at 0 to 1 mA
z
Event relay outputs (ev1 to ev3)
Contact rating:
250 V AC/30 V DC 2 A (resistive load)
Life:
100,000 cycles min.
Min. switching specification:
5 V, 10 mA (reference value)
z
RS-485 communication
Transmission line:
3-wire system
Transmission speed:
4800, 9600, 19200, 38400 bps
Communication protocol:
CPL and Modbus conforming
Terminating resistor:
Do not connect a terminating resistor.
z
Environmental condition
• Operating conditions
Ambient temperature:
0 to 50 °C (Gang-mounting: 0 to 40 °C)
Ambient humidity:
10 to 90 %RH (non-condensing)
Rated power supply voltage:
AC model 100 to 240 V AC, 50/60 Hz
DC model 24 V AC 50/60 Hz, 24 V DC
Power supply voltage range:
AC model 85 to 264 V AC, 50/60±2 Hz
DC model 21.6 to 26.4 V AC, 50/60±2 Hz
21.6 to 26.4 V DC
• Transport conditions
Ambient temperature:
–20 to +70 °C
Ambient humidity:
10 to 95 %RH (non-condensing)
z
Other specifications
Power consumption:
Max. 12 VA for AC model
Max. 12 VA for DC model at 24 V AC
Max. 8 W for DC model at 24 V DC
Non-detected failure time:
Max. 20 ms (AC model)
No power failure allowed (DC model)
Altitude:
2000 m or less
Mass:
C25
Approx. 250 g (with mounting bracket)
C26
Approx. 300 g (with mounting bracket)
Terminal screw tightening torque: 0.4 to 0.6 N·m
Applicable standards:
EN61010-1,
EN61326-1 (For use in industrial locations)
During EMC testing, the reading or output
may fluctuate by ±10 % FS.
Over-voltage category:
Category II (IEC60364-4-443, IEC60664-1)
Allowable pollution degree:
Pollution degree 2
ACCESSORIES
Name
Model No.
Mounting bracket
81409654-001 (Accessory)
