68
Digital I/O Units
Section 4-6
Note
With the GRT1-OD4G-1 or GRT1-OD4G-3, even if a short-circuit occurs on
one output, the other three outputs will operate normally.
Rated Output Current of the GRT1-OD4G-3
The total power that may be delivered by the outputs of the GRT1-OD4G-3
depends on the ambient temperature. To determine the maximum allowed
temperature for an application, add the squares of the currents (at 24 V DC)
for outputs that can be ON simultaneously. Find the corresponding tempera-
ture in the following graph. The actual ambient temperature may not exceed
the found value.
If necessary, spread the output load over multiple GRT1-OD4G-3 Units.
0
2
4
6
8
10
12
14
16
18
0
10
20
30
40
50
60
Ambient temperature
Σ
I
2
Ambient
temperature
Examples of maximum output loads
≤
30
°
C
16 A
2
4 points
×
2 A
35
°
C
14 A
2
3 points
×
2 A + 1 points
×
1.4 A
4 points
×
1.85 A
40
°
C
11.5 A
2
2 points
×
2 A + 2 points
×
1.3 A
4 points
×
1.7 A
45
°
C
9 A
2
2 points
×
2 A + 2 points
×
0.7 A
4 points
×
1.5 A
50
°
C
6.5 A
2
1 points
×
2 A + 1 points
×
1.4 A + 2 points
×
0.5 A
4 points
×
1.25 A
55
°
C
4 A
2
1 points
×
2 A
4 points
×
1 A
Σ
I
2
Summary of Contents for SmartSlice GRT1-Series
Page 1: ...Slice I O Units Cat No W455 E1 06 SmartSlice GRT1 Series OPERATION MANUAL ...
Page 2: ...SmartSlice GRT1 Series Slice I O Units Operation Manual Revised November 2007 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 13: ...xiv ...
Page 21: ...xxii EC Directives 6 ...
Page 63: ...42 Connecting Turnback Cables Section 3 3 ...
Page 109: ...88 Digital I O Units Section 4 6 ...
Page 251: ...230 Maintenance Information Window Section 7 3 Maintenance Information Window ...
Page 293: ...272 GRT1 CP1 L Positioning Unit Section 7 5 ...
Page 301: ...280 GRT1 END End Unit Section 8 5 Dimensions 11 9 11 9 55 7 1 5 19 5 83 5 2 9 2 9 OMRON ...
Page 323: ...302 Troubleshooting by Unit Section 9 5 ...
Page 351: ...330 Explicit Messages Appendix A ...
Page 355: ...334 Power Consumption and Weight Tables Appendix C ...
Page 357: ...336 I O Current Consumption Table Appendix D ...
Page 365: ...344 Revision History ...