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Operating instructions
Chapter
5
ICR 84x Image Code Reader
Electrical installation
8 010 961/0000/10-05-2005
©
SICK AG · Division Auto Ident · Germany · All rights reserved
5-5
5.4
Electrical installation preparations
5.4.1
Requirements for the host interface
The host interface of the ICR can be operated as an RS 422/485 or an RS 232 interface.
shows the recommended maximum cable lengths as a function of the selected
data transfer rate.
Recommendation
¾
To prevent interference, do not lay the cable parallel with power supply and motor
cables over long distances, e.g. in cable ducts.
5.4.2
Power supply
The ICR requires a power supply of 15 to 30 V DC (functional extra-low voltage) in
accordance with the standard IEC 364-4-41. The functional extra-low voltage can be
generated by using a safety isolating transformer pursuant to IEC 742. The ICR has a typical
power consumption of typically 7 W, max. 10 W (when switching outputs are not connected).
The ICR is supplied with 15 to 30 V DC via the CDB 420 or CDM 420 Connection Module.
If an optional CMF 400 fieldbus gateway or a CMD 400 Connection Module Display is
additionally used in the CDM 420, the ICR is supplied with
18
to 30 V DC.
If the CMP 400 Power Supply Module is used in the CDM 420, a mains voltage of 100 to
250 V AC/50 to 60 Hz is required.
Power-up delay
The selected device number (default setting: 1) affects the power-up delay of the device.
This is useful if a large number of ICRs (e.g. in the CAN scanner network) are to be supplied
from one power source.
contains a list of the available intervals.
Tip
The device number can be selected on the D
EVICE
C
ONFIGURATION
tab in the CLV Setup
program.
Interface type
Transmission rate
Distance from host
RS 232
Up to 19,200 bd
Max. 10 m (32.8 ft)
38,400 to 57,600 bd
Max. 3 m (9.84 ft)
RS 422/485
1)
Max. 38,400 bd
Max. 1,200 m (3,937 ft)
Max. 57,600 bd
Max. 500 m (1,640 ft)
1) with suitable line termination according to specifications
Table 5-5: Maximum cable lengths between the ICR and host
Device number GN
Power-up
delay
Device number GN
Power-up
delay
1; 11; 21; 31
0 ms
6; 16; 26
2 000 ms
2; 12; 22
400 m
7; 17; 27
2 400 ms
3; 13; 23
800 ms
8; 18; 28
2 800 ms
4; 14; 24
1 200 ms
9; 19; 29
3 200 ms
5; 15; 25
1 600 ms
10; 20; 30
3 600 ms
Table 5-6: Power-up delay as a function of the device number GN