24 Part number HA028582. Issue 6.0 May-07
Caution:
Live sensors
The controller is designed to operate if the
temperature sensor is connected directly to an
electrical heating element. However, you must ensure
that service personnel do not touch connections to
these inputs while they are live. With a live sensor, all
cables, connectors and switches for connecting the
sensor must be mains rated for use in 240Vac CATII.
Wiring
It is important to connect the controller in accordance
with the wiring data given in this guide. Take
particular care not to connect AC supplies to the low
voltage sensor input or other low level inputs and
outputs. Only use copper conductors for connections
(except thermocouple inputs) and ensure that the
wiring of installations comply with all local wiring
regulations. For example in the UK use the latest
version of the IEE wiring regulations, (BS7671). In
the USA use NEC Class 1 wiring methods.
Power Isolation
T
he installation must include a power isolating switch
or circuit breaker. This device should be in close
proximity to the controller, within easy reach of the
operator and marked as the disconnecting device for
the instrument
.
Overcurrent protection
The power supply to the system should be fused
appropriately to protect the cabling to the units.
Voltage rating
The maximum continuous voltage applied between
any of the following terminals must not exceed
240Vac:
•
relay output to logic, dc or sensor connections;
•
any connection to ground.
The controller must not be wired to a three phase
supply with an unearthed star connection. Under fault
conditions such a supply could rise above 240Vac
with respect to ground and the product would not be
safe.
Conductive pollution
Electrically conductive pollution must be excluded
from the cabinet in which the controller is mounted.
For example, carbon dust is a form of electrically
conductive pollution. To secure a suitable atmosphere
in conditions of conductive pollution, fit an air filter to
the air intake of the cabinet. Where condensation is
likely, for example at low temperatures, include a
thermostatically controlled heater in the cabinet.
Summary of Contents for 3200
Page 1: ...3200PID Temperature controllers User Guide Manuel Utilisateur Bedienungsanleitung ENG FRA GER ...
Page 57: ...3200Régulateurs de température PID Manuel Utilisateur FRA ...
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Page 116: ...58 3200 Guide utilisateur HA028582FRA Indice 6 0 mai 07 ...
Page 117: ...3200PID Temperaturregler Bedienungsanleitung GER ...
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