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Chapter 5 Operating Instructions

CLV490 Bar Code Scanner

Electrical installation

5.4 Preparations for electrical installation

5.4.1 Requirements for the host interface

The host interface of the CLV490 can be operated as an RS 422/485 or an RS 232 inter-

face. Table 5-19 shows the recommended maximum cable lengths as a function of the se-

lected data transfer rate.

¾ To prevent interference, do not lay the cables parallel with power supply and motor

cables over long distances, e. g. in cable ducts.

5.4.2 Supply voltage

The CLV490 requires a supply voltage of 18 to 30 V DC for operation without a heater and

24 V DC +20 %/–10 % for operation with a heater (functional extra-low voltage in accor-

dance with IEC 364-4-41). The functional extra-low voltage can be generated by using a

safety transformer pursuant to IEC 742.

The power consumption of the individual types is as follows:

Via the CDB420 or CDM490 Connection Module the CLV490 without heater is supplied

with 18 to 30 V DC, the CLV490 with heater is supplied with 24 V DC +20 %/−10 %.

If the CMP 490 Power Supply Module in the CDM490 is used for the CLV490 without heat-

er, the input voltage is 100 to 250 V AC/50 to 60 Hz.

Power-up delay

The selected device number (default: 1) affects the power-up delay of the device. This is

useful if a large number of CLV490 (e. g. in the SICK CAN Scanner Network) are to be sup-

plied from one power source. Table 5-21 contains a list of the available intervals.

Interface type Transfer rate Distance from host

RS 232 Up to 19,200 bd

38,400 to 57,600 bd

Max. 10 m (32.8 ft)

Max. 3 m (9.84 ft)

RS 422/485

Max. 38,400 bd

Max. 57,600 bd

Max. 1,200 m (3,936 ft)

Max. 500 m (1,640 ft)

1) with suitable line termination according to specifications

Table 5-19: Maximum cable lengths between the CLV490 and host

Type Voltage Scanning method Heater

Power consumption

Connection

module

CLV490-0010/-2010/-6010

CLV490-1010/-3010/-7010

18 to 30 V DC

Line scanner

Line scanner with

oscillating mirror

11 W (typ.)/max. 16 W

13 W (typ.)/max. 18 W

CDB420 or

CDM490

CLV490-0011/-2011/-6011

CLV490-1011/-3011/-7011

24 V DC

+20 %/–10 %

Line scanner

Line scanner with

oscillating mirror

Yes

75 W (typ.)/max. 90 W

75 W (typ.)/max. 100 W

CDB420 or

CDM490

1) switching outputs not connected

Table 5-20: Power consumption of the CLV490

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 ms 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 5-21: Power-up delay as a function of the device number GN

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