Datasheet

20 Remote I/O
Relay output unit
Item Specifications
Model NX-OC2633 NX-OC2733 NX-OC4633
Name Relay output unit
Relay type N.O. contact N.O. + N.C. contact N.O. contact
Capacity 2 points, independent contacts 8 points, independent contacts
Max. switching capacity 250 VAC/2 A (cos Ø = 1), 250 VAC/2 A (cos Ø = 0.4), 24 VDC/2 A, 4 A/unit 250 VAC/2 A (cos Ø = 1),
250 VAC/2 A (cos Ø = 0.4),
24 VDC/2 A, 8 A/unit
Min. switching capacity 5 VDC, 1 mA
ON/OFF response time 15 ms max.
Relay service life Electrical: 100,000 operations
*1
Mechanical: 20,000,000 operations
*1. Electrical service life will vary depending on the current value. Refer to “NX-series digital I/O units user’s manual” for details.
Dielectric strength Between A1/B1 terminals and A3/B3 termi-
nals:
2,300 VAC for 1 min at a leakage current of
5mA max.
Between the external terminals and GR termi-
nal:
2,300 VAC for 1 min at a leakage current of
5mA max.
Between the external terminals and internal
circuits:
2,300 VAC for 1 min at a leakage current of
5mA max.
Between the internal circuit and GR terminal:
510 VAC for 1 min at a leakage current of
5mA max.
Between A1/3, B1/3 terminals and A5/7, B5/7
terminals:
2,300 VAC for 1 min at a leakage current of
5mA max.
Between the external terminals and functional
ground terminal:
2,300 VAC for 1 min at a leakage current of
5mA max.
Between the external terminals and internal
circuits:
2,300 VAC for 1 min at a leakage current of
5mA max.
Between the internal circuit and functional
ground terminal:
510 VAC for 1 min at a leakage current of
5mA max.
Between output bits:
2,300 VAC for 1 min at a leakage current of
5mA max.
Between the external terminals and the func-
tional ground terminal:
2,300 VAC for 1 min at a leakage current of
5mA max.
Between the external terminals and internal
circuits:
2,300 VAC for 1 min at a leakage current of
5mA max.
Between the internal circuit and functional
ground terminal:
510 VAC for 1 min at a leakage current of
5mA max.
Insulation resistance Between A1/B1 terminals and A3/B3 termi-
nals:
20 M min. (500 VDC)
Between the external terminals and internal
circuits:
20 M min. (500 VDC)
Between the internal circuit and GR terminal:
20 M min. (100 VDC)
Between the external terminals and GR termi-
nal:
20 M min. (500 VDC)
Between A1/3, B1/3 terminals and A5/7, B5/7
terminals:
20 M min. (500 VDC)
Between the external terminals and functional
ground terminal:
20 M min. (500 VDC)
Between the external terminals and internal
circuits:
20 M min. (500 VDC)
Between the internal circuit and functional
ground terminal:
20 M min. (100 VDC)
Between output bits:
20 M min. (500 VDC)
Between the external terminals and the func-
tional ground terminal:
20 M min. (500 VDC)
Between the external terminals and internal
circuits:
20 M min. (500 VDC)
Between the internal circuit and functional
ground terminal:
20 M min. (100 VDC)
Vibration resistance Conforms to IEC60068-2-6.
5 to 8.4 Hz with amplitude of 3.5 mm, 8.4 to 150 Hz, acceleration of 9.8 m/s
2
, 100 min each in X, Y and Z directions (10 sweeps of 10 min
each =100 min total)
Shock resistance 100 m/s
2
, 3 times each in X, Y and Z directions
Isolation method Relay isolation
Unit power consumption 0.80 W max. 0.95 W max. 1.65 W max.
I/O power supply method Supply from external source
I/O current consumption No consumption
Current capacity of I/O
power supply terminal
Without I/O power supply terminals
I/O refreshing method Free-run refreshing
Terminal block type Screwless push-in terminal
8 terminals (A + B)
Screwless push-in terminal
8 terminals × 2 (A + B)
Dimensions (W x H x D) 12 × 100 × 71 mm 24 × 100 × 71 mm
Weight 65 g max. 70 g max. 140 g max.
Disconnection/
short-circuit detection
Not supported
Protective function Not supported