Endress+Hauser Flowfit CYA27, Руководство по эксплуатации

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Installation Flowfit CYA27
22 Hauser
5.4 Flow switch and status indication light (optional)
L
WARNING
Device is live!
Incorrect connection may result in injury or death!
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The electrical connection may be performed only by an electrical technician.
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The electrical technician must have read and understood these Operating Instructions
and must follow the instructions contained therein.
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Prior to commencing connection work, ensure that no voltage is present on any cable.
Use of the flow switch and status indication light is recommended. The flow switch is used
to monitor a continuous, adequate level of flow through the assembly. The status
indication light enables easy identification of the operating status of the measuring point
through the use of different colors to indicate malfunctions in the assembly that are
detected by the transmitter.
Malfunctions generate error messages (also diagnostic messages) in transmitters, e.g.
CM44x. If they belong to the diagnostic category NAMUR F, this will result in a red screen
color on the display (CM44x).
5.4.1 Connecting to the CM44x
The flow switch and the status indication light are connected to a CM44x via the power
supply (24 V) and the digital input of a DIO module, as well as a relay, e.g. the alarm relay
of the BASE-E or BASE2-E module, or alternatively a 2R or 4R module.
The following components are also required for installation (flow switch and status
indication light) and are not included in the scope of delivery of the assembly:
• DIO module (order no. 71135638)
• 3 connecting cables approx. 20 cm (7.87 in)
• Ferrules (optional)
• Small flat-blade screwdriver
• Cable stripper
1. Strip the cable of the flow switch and/or status indication light by at least
20 cm (7.87 in).
2. Install ferrules.
3. Guide the cable through the holes provided on the underside of the CM44x.
4. Wire the cables in accordance with the wiring diagram.
Plug-in terminals on the CM44x
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Press the screwdriver against
the clip (opens the terminal).
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Insert the cable until the limit
stop.
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Remove the screwdriver (closes
the terminal).