Schneider Electric 58 TRX

Class 8839 58M Enclosed AC Drives

Specifications

180 09/2003

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 S tat 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 V A to operat e 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 FAUL T

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 conc erns

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. Th e 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