SICK ReLy EMSS3

Fine wire with ferrule with plastic collar (2×,
s
ame cross-section)
≤ 0.5 mm
2
Fine wire with ferrules with or without collar
(1×)
0.25 mm
2
… 1.0 mm
2
For UL and CSA applications 26 AWG … 14 AWG
(use onl
y copper wire (60/75 °C))
Table 7: Electrical data - operating data
Supply voltage U
V
24 V DC (16,8 V DC … 30 V DC) (safety extra-
lo
w voltage)
1) 2)
Rated voltage 24 V DC
Residual ripple U
s
s
2.4 V
Power consumption ≤ 2.5 W
Power-up delay after supply voltage applied ≤ 5 s
1)
The external voltage supply must be capable of bridging a brief power failure of 20 ms as specified in
IEC 60204-1. Suitable power supply units are available as accessories from SICK.
Protect supply voltage against short-circuit.
2)
For use according to the requirements of ANSI/UL 508, ANSI/UL 60947-5-1 and ANSI/UL 60947-1, volt‐
age supply U
V
must be protected with 4 A.
Table 8: Electrical data - inputs (I1, I2, S1)
Input voltage HIGH 24 V DC (11 V DC … 30 V DC)
Input voltage LOW 0 V DC (–3 V DC … 5 V DC)
Input capacity ≤ 15 nF
Input current 4 mA … 6 mA
Reset time
Manual ≤ 250 ms
Automatic ≤ 250 ms
Actuation time of reset button 140 ms ... 30 s
Minimum power-up delay
1)
80 ms
Minimum switch-off time
2)
5 ms
Concurrence monitoring ≤ 3,000 ms
Length of cable (single) ≤ 100 m
1)
Time in which an input signal must have the HIGH status before the outputs switch.
2)
Time in which an input signal must have the LOW status before the outputs switch.
Table 9: Electrical data - test pulse outputs (X1, X2, R1)
Type of output PNP semiconductor output, short-circuit pro‐
t
ected
Output voltage (U
V
– 3 V) … U
V
Test pulse interval 40 ms
Test pulse width 2 ms
Length of cable (single) ≤ 100 m
Cable resistance ≤ 10 Ω
Table 10: Electrical data - application diagnostic output (Y1, Y2)
Type of output Push-pull semiconductor output, short-circuit
pr
otected
10 TECHNICAL DATA
26
O P E R A T I N G I N S T R U C T I O N S | ReLy EMSS3 8023937/2019-10-11 | SICK
Subject to change without notice