Certified Standards
Certification body
Standard
TÜV Rheinland
EN ISO 13849-1
EN ISO 13849-2

IEC 61508

EN 62061

EN 61131-2

IEC 61326-3-1
UL
UL508
ISA12.12.01

UL1998

IEC 61508-3
Specifications
Model
NE1A-SCPU01-V1
NE1A-SCPU02
Communications power supply voltage
11 to 25 VDC supplied via communications connector
Internal circuit power supply voltage (V0) *1
20.4 to 26.4 VDC (24 VDC -15%/+10%)
I/O power supply voltage (V1, V2) *1
Current
consumption
Communications power supply
24 VDC, 15 mA
Internal circuit power supply
24 VDC, 230 mA
24 VDC, 280 mA
I/O power supply *2
24 VDC, 40 mA (Input)
120
mA (Output)
24 VDC, 80 mA (Input)
150
mA (Output)
Overvoltage category
II
Noise immunity
Conforms to IEC61131-2.
Vibration resistance
10 to 57 Hz: 0.35 mm, 57 to 150 Hz: 50 m/s2
Shock resistance
150 m/s2: 11 ms
Mounting method
DIN Track (IEC 60715 TH35-7.5/TH35-15)
Ambient operating temperature
-10 to 55°C
Ambient operating humidity
10% to 95% (with no condensation)
Ambient storage temperature
-40 to 70°C
Degree of protection
IP20
Serial interface
USB version 1.1
Weight
460 g max.
690 g max.
*1. V0-G0: Internal control circuit
       V1-G1 (G): For external input device, test output

       V2-G2 (G): For external output device

       
The two ground terminals on the NE1A-SCPU02 are internally connected.
*2. Not including power consumption for external devices.
Safety Input Specifications
Input type
Sinking inputs (PNP)
ON voltage
11 VDC min. between each terminal and ground
OFF voltage
5 VDC min. between each terminal and ground
OFF current
1 mA max.
Input current
4.5 mA
Safety Output Specifications
Output type
Sourcing outputs (PNP)
Rated output current
0.5 A max./output
ON residual voltage
1.2 V max. between each output terminal and V2
Leakage current
0.1 mA max.
Test Output Specifications
Output type
Sourcing outputs (PNP)
Rated output current
0.7 A max./output *
ON residual voltage
1.2 V max. between each output terminal and V1
Leakage current
0.1 mA max.
* The maximum current for simultaneously ON outputs is 1.4 A.
    (T0 to T3: NE1A-SCPU01-V1, T0 to T7: NE1A-SCPU02)

    A 15 to 400-mA, 24-VDC external indicator can be connected to T3 and T7.
DeviceNet Communications Specifications
Communications protocol
DeviceNet compliant
Connection form
Multi-drop system and T-branch system can be combined
(for trunk line and branch lines)
Communications speed
500/250/125 kbps
Communications media
Special cable, 5 conductors
(2 for communications, 2 for power supply, 1 for shielding)
Communications distance
Communications
speed
Max. network length
Branch length
Total branch
length
500 kbps
100 m max.
(100 m max.)
500 m max.
39 m max.
250 kbps
250 m max.
(100 m max.)
78 m max.
125 kbps
500 m max.
(100 m max.)
156 m max.
Note: Figures in parentheses ( ) indicate values when a thin cable is used.
Communications power supply
11 to 25 VDC
No. of connectable nodes
63
Safety I/O communications
(Pre-Ver. 1.0)
Safety Master function
Max.
no. of connections: 16
Max.
data size: Input 16 bytes or output 16 bytes (per connection)
Connection type: Single-cast, multi-cast

Safety Slave function

Max.
no. of connections: 4
Max. data size: Input 16 bytes or output 16 bytes (per connection)

Connection type: Single-cast, multi-cast
Safety I/O communications
(unit version 1.0 or later)
Safety Master function
Max.
no. of connections: 32
Max.
data size: Input 16 bytes or output 16 bytes (per connection)
Connection type: Single-cast, multi-cast

Safety Slave function

Max.
no. of connections: 4
Max. data size: Input 16 bytes or output 16 bytes (per connection)

Connection type: Single-cast, multi-cast
Standard I/O communications
(all unit versions)
Standard Slave function
Max.
no. of connections: 2
Max. data size: Input 16 bytes or output 16 bytes (per connection)

Connection type: Poll, bit-strobe, COS, cyclic
Message communications
Max. message length: 552 bytes