AB Quality ALLEN-BRADLEY 1391-DES, User Manual

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Chapter 8
Start-Up
8-11
Linear Accel/Decel Control Module
The following information explains manual controller operation with the
Linear Accel/Decel Control Module (CR-APG-001). This module provides
adjustable acceleration/deceleration control for the 1391-DES. Up to four
remote or local preset speeds are available.
Important: The 1391-DES Accel/Decel Ramp parameter (146) locally
controls the velocity command per time rate. The default value is set to a
maximum of 22216 revs per sec/sec. This parameter must be kept at
maximum to allow the Linear Accel/Decel Control Module to set the
accel/decel rate within the minimum/maximum values.
1. Perform the Start-Up Procedure presented earlier in this chapter.
2. Remove all system power.
3. Install and interconnect the Linear Accel/Decel Control Module as
shown in Figure 8.2. Refer to Figure 8.3 for dimension information.
4. Set all of the Speed pots (SPD 1-SPD 4 or remote pots) to the
maximum clockwise position (speed minimum). Set the front panel
Accel and Decel pots to the maximum counterclockwise position
(minimum accel/decel time).
Important: All potentiometers on the module are 15 turn,
bi-directional. The Local Speed pots are setup such that
counterclockwise rotation will increase output and clockwise
rotation will decrease output. Counterclockwise rotation of the
Accel/Decel pots will decrease time, while clockwise rotation will
increase time.
5. Apply 115V AC to terminals 1 & 2 of J3. Using a voltmeter, verify
that this voltage is present. Also verify that +10V DC is present
between terminals 9 (+) and 2 (–) of J1. The “ON/OFF” LED
located on the front of the module will be illuminated.
6. Select Remote or Local speed control.
To select Remote Speed
a) Connect an external, 1k ohm, 1/2 watt speed potentiometer as
shown in Figure 8.2.
b) Energize the R/L 1 input (terminals 3 & 4 of J2) with either
24V DC or 115V AC.
c) Energize the speed select input, SEL 1 (terminals 1 & 2 of J2)
with the same voltage used in the previous step. The front panel
“R/L 1” LED will illuminate.
d) Repeat steps a through c for any of the other three preset speeds.
Important: If more than one speed is selected at the same time,
the resulting speed for the velocity profile will not be predictable.