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Installation
Apogee P1 FLN Communication Module (HVAC10)
Note: One example: Belden B3079A cable meets the above specification.
Before installing, ensure that the drive and all wiring is electrically isolated and
cannot be made "live" unintentionally by other personnel.
Wait 5 minutes after disconnecting power before working on any part of the
system or removing the covers from the Drive.
You can create a network of drives by linking a Master (PLC or Apogee controller) to one or
more HVAC10 drives fitted with this module.
Plug this Communication Module on to the front of the HVAC10 drive by removing its terminal
cover and fitting the product to the right-most Technology Box position.
Wiring is very simple - all connections are SELV (Safe Extra Low Voltage).
It is possible to establish serial communications without adhering to the following
recommendations, however, the recommendations will promote greater reliability.
PLC/SCADA Supervisor (4-wire only)
If possible, avoid using a PLC/SCADA supervisor which take its transmitter to a high impedance
state (tri-state) when idling. If it is unavoidable, then it is essential to use properly screened
cable.
Cable Specification
Use cable which has two twisted pairs,
with each pair individually screened as
shown. The characteristic impedance
should be in the range 100 to 165 Ohms.
Recommended Cable Specification
Recommended Cable Specification
Recommended Cable Specification
Recommended Cable Specification
Characteristic Impedance
Cable Capacitance
Core Diameter
Cable Type
Resistance
Shielding
Cable Routing
Daisy chain one drive to the next. The supervisor should be at one end of the run. Avoid spurs.
Earthing/Grounding
Connect the screens of both pairs of wires to ground at the supervisor. If possible, connect the
supervisor's transmitter/receiver 0V reference to earth. Connect all screens as shown in the
following diagrams.
WARNING!
screen
twisted pair
conductors
100-165Ω at 3-20MHz
<30pF/m
0.34mm² (22 AWG)
Twisted pair cable
<110Ω/km
Copper braid, or braid & foil
Siemens Apogee P1 Communications Interface
insulation
outer sheath
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