C200 HARDWARE
Instruction Manual C200 Part1 A1.doc
optek Danulat GmbH • D-45356 Essen • Germany
page 15
4 Field wiring schematic
4.1 General Instructions
The instrument is not fitted with a switch therefore a disconnecting device such as a switch or circuit
breaker conforming to local safety standards must be fitted to the final installation. It must be fitted in close
proximity to the instrument within easy reach of the operator and must be marked clearly as the
disconnection device for the instrument.
Remove all power from supply, relay and any powered control circuits and high common mode voltages
before accessing or making any connections
The power supply earth (ground) must be connected to ensure safety to personnel, reduction of the effects
of RFI interference and correct operation of the power supply interference filter.
The power supply earth (ground) must be connected to the earth (ground) stud on the analyzer case – see
3.2 (back panel).
The metal braid in the sensor system connecting cable must be connected to the earth (ground) stud on the
analyzer case – see 3.2 (back panel)
Use cable appropriate for the load currents. The terminals accept cables up to 14AWG (2.5mm
2
).
The instrument conforms to Mains Power Input Insulation Category III. All other inputs and outputs conform
to Category II.
All connections to secondary circuits must have basic insulation.
After installation, there must be no access to live parts, e.g. terminals.
Terminals for external circuits are for use only with equipment with no accessible live parts.
The relay contacts are voltage-free and must be appropriately connected in series with the power supply
and the alarm/control device which they are to actuate. Ensure that the contact rating is not exceeded. Refer
also to Section 4.2 for relay contact protection details when the relays are to be used for switching loads.
Do not exceed the maximum load specification for the selected analog output range.
The analog output is isolated, therefore the –ve terminal must be connected to earth (ground) if connecting
to the isolated input of another device.
If the instrument is used in a manner not specified by the Company, the protection provided by the
equipment may be impaired.
All equipment connected to the instrument's terminals must comply with local safety standards (IEC 60950,
EN601010-1).
Earthing (grounding) – a stud terminal is fitted to the analyzer case for bus-bar earth
(ground) connection – see 3.2 (back panel).
Always route signal output/sensor cell cable leads and mains-carrying/relay cables
separately, ideally in earthed (grounded) metal conduit. Use twisted pair output
leads or screened cable with the screen connected to the case earth (ground) stud.
*
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