VAC D400, Operating Instructions Manual

Page: 9 / 71

42/18-82 EN Electro-pneumatic positioner TZIDC-220 9
1.3 Explosion protection
One of the type plates seen below is attached to the positioner to the left of the main type
plate, depending on the positioner’s explosion protection. It indicates the degree of
explosion protection and the certificate valid for your positioner. For details please refer
to chapter "Certificates" starting on page 40.
!
NOTICE
Electromagnetic interference
• Do not run bus/signal lines close to power lines. Power lines produce
interference in their near vicinity which may affect the electrical
capabilities of the bus/signal lines.
• In order to ensure electromagnetic compatibility (EMC), always use
shielded cables conforming to the standards for the bus lines. When
running the device with the option modules (proximity switches,
microswitches, shutdown module) use shielded cables for these
modules as well. All cable shields must be kept as short as possible
and have to be connected to protective ground on both sides (use the
grounding screw in the TZIDC-220 connection compartment on the
device side).
• Keep the case closed. When the case is open, the positioning action
may be affected through electromagnetic interference. This may result
in a permanent positioning error, especially when the Autoadjust
function is performed with the case open.
!
WARNING
Always observe the specifications and special requirements for your
positioner stipulated in the applicable certificate.
Fig. 1 Type plate indicating the degree of explosion protection