Schneider Electric ALTIVAR 58 TRX - Manual (Page 180)

Class 8839 58M Enclosed AC Drives
Specifications
180
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2.12 SYSTEM CONTROL AND INTERFACE
REQUIREMENTS
Note to Specifier: Select the additional control
functions that are appropriate for application
requirements.
a. The following additional controls and interface
requirements shall be provided:
1. Smoke Purge – The AC Drive shall provide
a smoke purge interface relay. This relay,
when closed will force the AC Drive to
operate at the high speed setting (HSP) of
the drive controller independent of any
control setting or interlock. If full speed
bypass is provided, the drive shall operate
on bypass when the smoke purge relay is
closed, independent of any system
interlocks.
2. Fire / Freeze Stat Interlocks – The AC drive
shall provide interlock wired to user
terminals. Open interlocks shall prevent
drive or bypass operation unless a smoke
purge relay is provided and closed.
3. Damper End Switch – The AC Drive shall
provide a damper control circuit to
coordinate the position of a damper to
open before the motor is started either in
AFC or Bypass. This circuit shall also
provide maximum power of 40 VA sealed
and 100 VA into the damper solenoid.
4. Seal Water Solenoid – The AC Drive shall
provide 120 Vac / 50 VA to operate the seal
water solenoid whenever the motor is
energized.
5. Moisture Detection – The AC Drive shall
provide a moisture detection circuit to
indicate the presence of moisture in the
windings of a submersible pump and
prevent drive or bypass operation if
moisture is detected.
6. Check Valve Sequencing – The AC Drive
shall provide a circuit that shuts down the
drive whenever a user supplied check
valve limit switch does not open within a
specified time. This circuit shall provide an
illuminated reset push button to indicate
improper sequence.
7. Motor Space Heater Sequencing – The AC
Drive shall provide 120Vac/50VA to
operate motor space heater when the
motor is not running.
8. Motor Elapsed Time Meter – The AC Drive
shall provide and elapsed time meter
which operate whenever the motor runs.
9. Auxiliary Contacts – The AC Drive shall
provide the following auxiliary contacts to
indicate the following conditions:
2 N.O. contacts to indicate DRIVE RUN
1 N.C. contact to indicate DRIVE RUN
1 N.O. contact to indicate DRIVE FAULT
2 N.C. contacts to indicate DRIVE FAULT
1 N.O. contact to indicate BYPASS RUN
1 N.O. contact to indicate AUTO/COMM
MODE
2.13 COMMUNICATION AND NETWORKING
REQUIREMENTS
Note to Specifier: Specifying a communication
relay serves two important user safety concerns
when using network communications:
1. Ensures that communication can not start an
AC Drive when safety interlocks (limit,
pressure, temperature or flow switches and/or
Emergency Stop circuits) that are not part of
the communication network are in an open
state.
2. Ensures that network communications can not
start, stop, or change the speed of an AC
Drive, when a control mode other than
communication is selected.
a. A Communication Mode Relay (CMR) shall
close when operator controls are in the
communication position. Contacts from the
CMR relay shall pick up the run command
relay if all safety conditions are met. Contacts
from the CMR relay shall also provide pilot
light indication when the AC Drive is in the
communication mode. The CMR relay shall
allow monitoring using network
communication in any operator control mode.
Network communication of start, stop, and
speed control shall be limited to the
communication mode when operator controls
are in the communication position.
b. The following Ethernet TCP/IP communication
card and protocol shall be mounted and wired
within the enclosed AC Drive.
c. The AC Drive shall accept an Ethernet
communications card that includes embedded
web-pages.
1. The embedded web-pages shall provide
the ability to configure, control, monitor
and diagnose the AC drives via a standard
web-browser such as Internet Explorer or