motortronics CSD Series, Руководство по эксплуатации и обслуживанию

Страница: 47 / 76

CSD Series Variable Frequency AC Drive
MOTORTRONICS
- 43 -
parameters can be changed by the external communication source.
The keypad and TM2 signals for run/stop and frequency control will be
disabled. The keypad can still be used for displaying voltage/current/
frequency or emergency stop but the keypad can not be used for
changing function parameters. With the multi-input terminal on during
communication, the drive run/stop and frequency command signal is
controlled by the drive itself. The external communication source can
still read parameters but will not be able to control start/stop or the
frequency reference.
11/27: Accel/Decel prohibit
Defines this terminal as a Accel/Decel prohibit contact. By programming
one of the multifunction input contacts to an accel/decel prohibit signal,
the contact can be used to momentarily stop acceleration or deceleration.
When the contact is de-energized, the drive will continue to accelerate
or decelerate to its final value.
12/28: UP command
13/29: DOWN command
Defines this terminal as an up command contact. Programming this
function to 13 (N.O.) or 29(N.C.) defines this terminal as a down command
contact. This function is only active if Fn 11=3. By Programming the
multifunction input contact as an up or down command contact, the
customer is able to remote the up/down commands that currently exist
on the keypad. When the up contact is energized, the drive will increase
speed until the up contact is de-energized. When the down contact is
energized, the drive will decrease speed until the down contact is de-
energized. If both contacts are energized at the same time the drive will
not accelerate or decelerate until one or the other direction is selected.
“Zero speed stop” control can be available if DOWN command is on
constantly. Drives start to run out of the “zero speed stop” mode if UP
command is energized.
Note: In STOP mode the UP/DOWN command is ineffective.
14/30: Sequence control: Refer to Fn17 and Fn84-Fn91
Defines this terminal as an auto sequence initialization contact. This
feature is only available with Fn84 = XXX1. When Fn84 = XXX1 and Fn
56-58 = 14 or 30 this changes the multifunction input to an auto sequence
initialization switch. When the contact is momentarily made on TM2
the drive will go to the speed of Fn17 for time of Fn85, then will go to
speed of Fn18 for time of Fn86 and so on through the seven preset
speeds of Fn17 - 23 for the seven preset times of Fn85 - 91. After the
timed cycle has elapsed, the drive will return to frequency set by keypad
or external analog signal input depending on the programming of Fn11.
Note: A new speed setting or timer setting cannot be inserted into an
ongoing timer and speed function.
15/31:Master/Auxiliary speed selection: Refer to Fn11
Defines this terminal as a master/auxiliary speed switch. This feature
is only available with Fn11 = 1 or 2. When Fn11 = 1 and the master/
auxiliary speed switch is de-energized, the potentiometer mounted on
the keypad will control the speed of the drive. Turning the potentiometer
fully counterclockwise will reduce the frequency of the drive to minimum.
Turning the potentiometer fully clockwise will increase the frequency of
the drive to maximum. When the master/auxiliaryspeed switch is
energized, the frequency is set by the analog input on TM2 pins 13 and
14. When Fn 11 = 2 and the master/auxiliary speed switch is de-
energized, the analog speed signal brought into TM2 pin 13 will control
the speed of the drive. When the master/auxiliary speed switch is
energized, the frequency is set by the potentiometer on the keypad.