sdc40b Yamatake Corporation, sdc40b Datasheet - Page 13

• Manufacturer Part Number: sdc40b
• Description: Digital Indicating Controller
• Manufacturer: Yamatake Corporation

I Precautions on wiring
1. Internal instrument isolation
Solid line (——) indicates isolated area.
Dashed line (......) indicates areas that are not isolated.
2. Power supply noise countermeasures
(1) Noise reduction
(2) When noise is excessive
G AC model
G DC model
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Input 1 (AR1)
(full multi)
Input 2 (AR2)
(4 to 20mA / 1 to 5V)
Input 3 (AIR3)
(1 to 5V)
Loader communication I/O
12 digital inputs
Communications I/O
(RS-485/RS-232C)
Input 1 (AIR1)
(full multi)
Input 2 (AIR2)
(4 to 20mA / 1 to 5V)
Input 3 (AIR3)
(1 to 5V)
Loader communication I/O
12 digital inputs
Communications I/O
(RS-485/RS-232C)
90 to 264Vac
90 to 264Vac
50/60Hz
50/60Hz
Even if the noise is negligible, use a line filter to mini-
mize line noise.
Use an insulation transformer and a line filter to reduce
the noise.
To supply power to the SDC40B, use an instrument-dedi-
cated single-phase power supply subject to minimal electri-
cal interference.
Connect the SDC40B DC model to a 24Vdc ± 10% power
source.
<Control output 2G (position proportional)>
Instrument
power supply
Instrument
power supply
<Control output 5G (current output)>
To other circuits
To other circuits
Insulating transformer
Insulating transformer
200/200V
100/100V
200/200V
100/100V
Ground
Line filter
81446364-001
Ground
Line filter
81446364-001
Analog output 1 (A01)
(control output 4 to 20mA)
Analog output 2 (AO2)
(auxiliary output 4 to 20mA)
Analog output 3 (AO3)
(auxiliary output 4 to 20mA)
Digital output 1
(relay output 1a)
Digital output 2
(relay output 1a)
Digital output 3
(relay output 1a1b)
Digital output 4 to 8 (open
collector output)
Analog output 1 (A01)
(control output 4 to 20mA)
Analog output 2 (AO2)
(auxiliary output 4 to 20mA)
Analog output 3 (AO3)
(auxiliary output 4 to 20mA)
Digital output 1
(relay output 1a)
Digital output 2
(relay output 1a)
Digital output 3
(relay output 1a1b)
Digital output 4 to 8 (open
collector output)
E
1
2
1
E
2
GND
3
4
3
4
24Vdc 10%
DC
Power
Supply
To other
circuits
Ground
SDC40B
1
2
3
Ground
SDC40B
1
2
3
13
3. Noise sources in installation environment
tion environment: relays, contacts, magnetic coils, solenoid
valves, power lines (especially 90Vac or above), inductive
loads, inverters, motor rectifiers, phase control SCR, radio
equipment, welding equipment, high-voltage ignition de-
vices, etc.
(1) Counteracting quick rising noise
(2) Counteracting noise with high peaks
4. Grounding
nal (terminal 3) to a single ground point without jumpering.
Use a grounding terminal board (earth bar) when shielded
wire is not available.
5. Wiring precautions
(1) When noise countermeasures have been taken, do not
(2) Inputs and communication lines should be at least
6. Inspections after wiring
spect the wiring carefully since incorrect wiring could
damage the instruments.
The following are possible noise sources in the installa-
To ground the SDC40B, connect the GND (FG) termi-
Grounding standard: Class 3 or better (100Ω or less)
Grounding wire: Soft steel wire (AWG14) with a cross
Length of ground wire: 20m max.
When all wiring procedures have been performed, in-
and countermeasures
Class 3 grounding
or better
Use a CR filter to counteract quick rising noise.
Recommended filter:
Yamatake part No.: 81446365-001
Use a varistor to counteract noise with high peaks, but
note that a defective varistor is short-circuited and has
to be handled with care.
Recommended varistor:
Yamatake part No.: 81446366-001 (100Vac)
bundle primary and secondary cables together or rout
them through the same distribution box or ducts
50cm away from power lines carrying voltages of
90Vac or more and do not route them through the same
distribution box or ducts.
Grounding terminal board
(Earth bar)
section of 2 mm
81446367-001 (200Vac)
2
or more
3
FG