Specifications

Altivar
®
31 Adjustable Speed AC Drives
Functions
© 2004–2005 Schneider Electric All Rights Reserved
34
4/2005
Remote keypad display option
The remote keypad display—for mounting on the door of a wall-mounted or
floor-standing enclosure—contains (a) an LCD display with programming
and control keys, and (b) a switch for locking access to the menus.
NOTE: Protection using the access locking code has priority over the switch.
The drive control keys function as follows:
• FWD/REV: reverses the rotation direction
• RUN: commands the motor to run
• STOP/RESET: commands the motor to stop; resets a fault
• Up and down arrow keys: adjust the speed reference
When the drive is configured to use the remote keypad display, only the
freewheel stop, fast stop, and DC injection stop commands remain active on
the terminal block. If the link is broken between the drive and the remote
keypad display, the drive faults. Its subsequent action depends on the control
and reference channel programming.
Menu access levels
There are three access levels:
Level 1: Access to standard functions.
(This level is comparable to the ATV28 drive.)
Level 2: Access to Level 1 functions, plus advanced application functions.
Level 3: Access to Level 2 functions, plus management of mixed control and
reference modes.
Access locking code
This function protects the drive configuration using an access code.
When access is protected, only the adjustment and monitoring parameters
are accessible.
Operating speed range
This function sets the two frequency limits—high speed and low speed—that
define the speed range permitted by the machine under actual operating
conditions for all applications, with or without overspeed.
Acceleration and deceleration ramp times
This function defines the acceleration and deceleration ramp times according
to the application and the machine dynamics.
Linear acceleration ramp Linear deceleration ramp
t1: acceleration time
t2: deceleration time
t1 and t2 can be set independently between 0.1
and 999.9 s. Factory setting: 3 s.
Remote keypad display
ATV31 Keypad Photo.tif
f (Hz)
HSP
LSP
0 V
x mA
4 mA
10 V
y mA
20 mA
Reference
Operating speed range
LSP: low speed, from 0 to HSP, factory setting 0
HSP: high speed, from LSP to f max., factory setting 50 Hz
x: configurable between 0 and 20 mA, factory setting 4 mA
y: configurable between 4 and 20 mA, factory setting 20 mA
563045.eps
Ramp adjustment with PowerSuite software
563714
50
f (Hz)
0
t1
t
563052
50
f (Hz)
0
t2
t
563053
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: [phone]-Outside Local Area: [phone]-www.stevenengineering.com