Technical data
9.5 EM 2/4F-DI 2F-DO
Modular Safety System 3RK3
System Manual, 10/2008, 926 2530-02 DS 02
293
9.5 EM 2/4F-DI 2F-DO
Technical data of the expansion module 2/4F-DI 2F-DO
Device data
Number of sensor inputs (1-channel) 4
No. of test outputs 2
No. of outputs 2 redundant semiconductor outputs
Height
• Screw terminals
• Spring-loaded terminals
102 mm
105 mm
Width 22.5 mm
Depth 124 mm
Weight 160 g
Electrical data
Supply voltage /
rated control supply voltage Us
24 V DC
Work area 0.85 to 1.15 x Vs
Rated insulation voltage V
i
50 V
Rated impulse strength V
imp
500 V
Total power consumption 85 mA
Rated power at Vs 2.0 W
Utilization category to EN 60947-5-1
(semiconductor outputs)
• DC13 at 24 V
1.2 A
Max. switching frequency z at rated operational current 1000 1/h
Conventional thermal current I
th
1.2 A
Safety data
Probability of a dangerous failure per hour (PFH
d
) 2.70 x 10
-9
1/h
Probability of a dangerous failure on request (PFD) 8.34 x 10
-6
Characteristic values for cables
Max. permissible cable resistance 100 Ω
Max. permissible cable length from device to sensor
(when CU 1.5 mm
2
and 150 nF/km)
1000 m
Max. permissible line capacity 330 nF
Dark period of solid-state outputs: < 1 ms
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