Technical Data; Technical Data For Le 20 - SICK LE20 Instrucciones De Operación

Operating Instructions
LE 20
7-segment display Meaning
f3 f6
OSSD 1 or OSSD 2 has short-
or ,
circuit with 0 V
alternating
f7
Short-circuit between OSSD 1
, alternating
and OSSD 2 or with 24 V
l2
Invalid configuration
, alternating
No display
Operating voltage outside
permitted range
Tab. 8-1: Troubleshooting table for the safety evaluation unit LE 20 and LE 20-Muting (continued)
2
) Cut operating voltage and restore
8 008 685/Q913/2007-05-21

Technical data

Cause/Check
Check wiring between"OSSD
1 and OSSD 2
Check wiring between"OSSD
1 and OSSD 2
Check configuration
wiring, EDM input
connected?
Measure operating voltage
9 9 9 9 9
Technical data
9-1

Technical data for LE 20

Electrical data
Supply voltage U
B
Power-up delay (after power On)
Current consumption
Power consumption
Response time of entire system
(dependent on system
configuration)
Response time for test input
Restart time
Connection cables
Inputs: signal level on/off
TEST EXTERN
Concurrence monitoring
Self-test cycle time
Tab. 9-1: Data sheet for LE 20
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
Remedy/Action
Correct short-circuit,
Correct short-circuit,
Correct wiring,
Check wiring, check voltage
source
24 V DC –30 %/+20 %, 5 % ripple
2 s approx.
I = 100 mA, muting version: I
max
4 W (without muting and override lamps)
to be calculated from the following constants:
- C 2000/M 2000: approx. 7 ms to 25 ms,
dependent on protective field height and
resolution
- single-beam photoelect. safety sw.: 9 ms max.
- LE 20: 5 ms
- Relay module: 5 ms
max. 30 ms
max. 50 ms
2
0.5 mm , length max. 30 m
2
2.5 mm , length max. 150 m
high: 15 V ... U , low: 0 V ... 10 V
B
high: external test inactive
low: external test active
pulse length >30 ms
possible time windows: 3 s or ∞
2 s
GB
Chapter 9
2 )
2
)
2
)
1
)
= 150 mA
max
3 1 7