User guide
DC Digital Input Modules
(T7401, 02, and 08)
12
Industrial Contr
ol Services
Specifications
Safetybus Power
1.15 load units
Number of Inputs
16 circuits divided into two
groups of eight
T7401
T7402
T7408
Voltage
Range
14 to 30 VDC
38 to 58 VDC
95 to 150 VDC
Turn
-
On Voltage
12 VDC, min
36 VDC, min
88 VDC, min
Turn
-
Off Voltage
4.7 VDC, max
11 VDC, max
28 VDC, max
Input Current
8.7 mA
4.4 mA
4.4 mA
Turn
-
On Delay
minimum
maximum
0.2 msec
1.8 msec
0.1 msec
1.0 msec
0.05 msec
0.4 msec
Turn
-
Off Delay
minimum
maximum
0.5 msec
2.6 msec
0.15 msec
1.0 msec
0.05 msec
0.5 msec
Over Voltage
Protection
continuous:
burst:
50 VAC
80 VAC, for
5
sec
140 VAC
220 VAC, for 5
sec
400 VAC
880 VAC, for
5
sec
Heat
Dissipation
10 Watts,
34 BTUs/hour
9.5 Watts,
32 BTUs/hour
18 Watts,
60 BTUs/hour
Fusing
None, fuse external if
required
Isolation
2500 volts minimum (field
wiring to control logic)
2500 volts minimum (input
group 1
-
8 to input group
9
-
16)
Operating Temperature
0°
to 60
°
C
(32
°
to 140
°
F)
Storage Temperature
-
40
°
to 85
°
C
(-
40
°
to 185
°
F)