Operating Instructions
ISD 230/260/280
Chapter
5
© SICK AG · Auto Ident · Germany · All rights reserved
8 008 207/30-11-2001
27
Electrical installation
The output circuit must have a safety separation from the input circuit in accordance
with IEC 742 through double insulation and safety isolating transformer.
Potential isolation
If you are using several ISD 230 systems with the RS 232, RS 422 or RS 485 interface,
we recommend that you provide the supply voltage to the individual ISDs connected
between the data cables via separate power packs as a potential isolation measure.
Heating
In the case of units with integrated heater, note that the current consumption depends on
the supply voltage. The current consumption is max. 2.5 A, typical value at a rated voltage
of 24 V DC: approx 1.3 A. If the supply voltage is lower, the current consumption and
heating output are reduced accordingly. In this case, ambient temperatures of max. –38 °C
may not be fully compensated by the heater. Wire-cross section is minimum 0,75 mm
2
at a
maximum length of 20 m.
The units must be switched on permanently during operation. If the system is switched on
when cold (below 0 °C), data transfer can only be ensured after the warm-up time (max.
60 min) has expired.
The AMS 50 is not suitable for supplying units with integrated heater (max. current
output 0.75 A).
Connector cover (accessory)
The optional connector cover no. 2 016 130 can be mounted on each unit to provide the
ISD system with enclosure rating IP 65 (
Fig. 10-3, Page 53
):
Ø
Insert the connection cable(s) through the screwed glands (
∅
3.5 ... 8 mm). Solder the
wire ends to the corresponding D Sub insert (spring contact strip (socket)).
See
Table 5-3, Page 26
for the pin assignments. Tighten the insert securely.
If only one cable inlet is required, remove the other screwed gland and screw in the
blind cover with sealing ring insead.
Ø
Mount the connector cover on the unit and tighten it securely.
5.1.6
Connecting the data interface
The data interface is configured (interface type and data transfer rate) as described in
Chapter 5.1.3, Page 24.
Table 5-5
provides the circuit diagrams for the various interface
types.
Damage to the interface module!
The interface modules in the unit may be damaged if the data interface is wired incorrectly.
Ø
Connect the data interface correctly in accordance with
Table 5-5
.
Ø
Check the wiring before switching on the unit.
1.
Connect the data interface EMC-compatibly to the host by means of shielded cables.
Observe the maximum cable lengths (see
Table 5-4, Page 26
).
2.
Apply the shield on both sides.
Recommendation
Configuration
and
electrical
installation
of
the
ISD
230
ATTENTION