Parker X-Flow FM-1407, Инструкции по эксплуатации

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Page 12 Instruction manual Parker X-Flow FM-1407 Rev - 11/2021
This document is available from the factory. Contact ppfinfo@parker.com or
www.parker.com/precisionfluidics/x-flow
2.7.2 Power Supply
X-Flow™ controllers are powered with +15 Vdc to +24 Vdc.
When providing your own power supply be sure that voltage and current rating are according to the
specifications of the instrument(s) and furthermore that the source can deliver enough power to the
instrument(s). Refer to Hook-up X-Flow™, document no. FM-1409, for more details.
Parker recommends the use of their standard cables. These cables have the right connectors and if
loose ends are used, these will be marked to prevent incorrect connections.
Parker Standard Cables available:
• C-700-002: 10 ft cable with connector and Flying Leads
• 7.03.366: T-Cable (see section on software)
•
C-1739-010: CM-400 Cable Connector
When using other cables, cable wire diameters should be sufficient to carry the supply current and
voltage losses must be kept as low as possible. When in doubt: contact the factory.
X-Flow™ instruments carry the CE-mark. Therefore, they comply with the EMC requirements as are
valid for these instruments. However, compliance with the EMC requirements is not possible without the
use of proper cables and connector/gland assemblies.
When connecting the system to other devices (e.g. to PLC), be sure that the integrity of the
shielding is not affected. Do not use unshielded wire terminals.
2.8 Power and warm-up
Before switching on power, check if all connections have been made according to the hook-up diagram.
It is recommended to turn on power before applying pressure on the instrument and to switch off power
after removing pressure. Check fluid connections and make sure there is no leakage. If needed purge
the system with a proper fluid. Only purging with gases is allowed. Turn on power and allow at least 30
minutes to warm up and stabilize for optimal accuracy. During warm-up period, fluid pressure may either
be on or off.
2.9 Pressure supply / Start-up
When applying pressure to the system, take care to avoid pressure shocks in the system and increase
pressure gradually up to the level of the actual operating conditions.
2.10 System purging
To eliminate contamination from foreign materials, start-up cleaning is highly
recommended prior to MFM/MFC installation Start-up cleaning must remove weld debris, tube
scale and any loose particulate generated during system fabrication.
If corrosive gases or reactive gases are to be used, the complete gas handling system must
be purged to remove all air
before
introducing process gas into the system. Purging can be
accomplished with dry nitrogen or other suitable inert gases.
Also, if it becomes necessary to break any gas connection exposing the gas handling system to
air, all traces of corrosive or reactive gas must be purged from the system
before
breaking the
connection.
Never allowing a corrosive or reactive process to mix with air reduces the chance of particulate or
precipitate formation in the gas handling system.
If explosive gases are to be used, purge the process with inert dry gas like Nitrogen, Argon etc. for at
least 30 minutes. In systems with corrosive or reactive fluids, purging with an inert gas is necessary,
!