8.7 EM 4/8F-DI
Technical data of the expansion module 4/8F-DI
Device data
Number of sensor inputs (1-channel), safety-related 8
Number of test outputs 2
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
Operating range 0.85 to 1.15 x Us
Rated insulation voltage U
i
50 V
Rated impulse voltage U
imp
500 V
Total power consumption 60 mA
Rated power at Us 1.5 W
Safety data according to EN ISO 13849-1
Probability of a dangerous failure per hour (PFH
d
) 1.89 x 10
-9
1/h
Probability of a dangerous failure on demand (PFD) 4.29 x 10
-6
Characteristic values for cables
Max. permissible cable resistance 100 Ω
Max. permissible cable length from device to sensor
(for CU 1.5 mm
2
and 150 nF/km)
1000 m
Max. permissible cable capacitance 330 nF
Technical data
8.7 EM 4/8F-DI
SIRIUS 3RK3 Modular Safety System
Equipment Manual, 07/2020, NEB926253002000/RS-AC/006 375
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