Schneider Electric ALTIVAR 58 TRX - Manual (Page 16)

Altivar ® 58 TRX AC Drives
Type FVC Drive Controllers
© 2000–2003 Schneider Electric All Rights Reserved
16
09/2003
Applications
The ATV58 Type FVC product is recommended in place of the ATV58 TRX Type H drive controllers in
the following applications:
• Applications that require encoder feedback and the installation of an I/O extension card or a
communication card
• Applications that require PID regulation of a process loop
• Applications requiring improved open loop torque performance at low speed
• Applications requiring high torque performance at low speed with encoder feedback
• Applications requiring holding torque at zero speed
The ATV58 Type FVC product has the following hardware not supplied with the ATV58 TRX Type H base
product:
• Differential analog input, +/- 10 Vdc (+10 Vdc supplied from drive)
• RS422 encoder input, 5 V (max. frequency input: 200 kHz)
• Encoder power supply (5 V, 200 mA)
• A keypad is supplied with the drive controller
The ATV58 Type FVC product has the following software features not supplied with the ATV58 TRX Type
H base product:
• Faster motor control algorithm in open loop and closed loop
• PID regulator with trim input
• Motor pre-fluxing options; continuous or by logic input
• Ability to customize the shape of the acceleration and deceleration ramps. Selectable acceleration
and deceleration ramp increments are 0.1seconds or 0.01 seconds.
• Ability to use +/- speed trim around a speed reference input
• PI and IP mode of operation for matching initial response time vs.ability to suppress speed overshoot
• Variable torque macro has been removed. No variable torque ratings.
The ATV58 Type FVC drive controller is rated for Constant Torque (CT) applications. Constant Torque
applications usually require motor-rated torque through the entire speed range, high transient torque
capability, and precise speed regulation.