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Page 34
DFS-1 Manual Revised 7/95
POWERTEC Ind. Corp.©
53. INPUT DEBOUNCE VALUE
USE PARAMETER #53 TO SET THE LENGTH OF
TIME AN INPUT MUST BE ACTIVE TO BE
ACTED UPON.
RANGE OF VALUES: 0000 0000h to 0000 00FFh
0 to 256 (decimal)
Default Value: 0000 0001h 1 (decimal)
Parameter #53 is the length of time, in 10
milliseconds (1 millisecond =.01 second), that a
digital input must be active before it is considered
legitimate. It is used primarily to eliminate the
contact bounce (which may generate multiple
commands) from relays used on inputs, but it can
also prevent noise problems from push-buttons.
54. FLOAT OR FREEZE
USE PARAMETER #54 TO SELECT WHERE THE
SETPOINT WILL BE ON START-UP.
RANGE OF VALUES: 0000 0000h to 0000 0001h
0 to 1 (decimal)
Default Value: 0000 0000h 0 (decimal)
When parameter #54 is set to 0000 0000h, the
SETPOINT at start-up (whether after a stop or after a
power loss) is always at zero. The speed SETPOINT
“floats” down with the motor speed. A new speed
SETPOINT must be entered or the UP MOP function
may be used to set speed.
When parameter #54 is set to 0000 0001h, the
SETPOINT at stop or power loss is “frozen” at the
current value, and the DFS-1 will return to this speed
when the drive next starts up. It is not necessary to
enter a new SETPOINT on start-up if a return to the
previous speed is desired.
Parameter #54 also affects the SLAVE mode, but
the SETPOINT cannot go to less than the value of
the minimum ratio (parameter #55) in FLOAT mode.
55. MINIMUM RATIO
USE PARAMETER #55 TO SET THE LENGTH OF
TIME AN INPUT MUST BE ACTIVE TO BE
ACTED UPON.
RANGE OF VALUES: 0000 0000h to 0001 869Fh
0 to 99,999 (decimal)
Default Value: 0000 0000h 0 (decimal)
Parameter #55 is the minimum ratio allowed at
any time in SLAVE mode.
NOTE THAT THE RATIO CANNOT GO
BELOW THIS VALUE, EVEN IN RESPONSE TO
DOWN FUNCTIONS OR WHEN THE FLOAT
PARAMETER IS SET. This parameter must be set
with these restrictions in mind.
56. COMMUNICATIONS
TURNAROUND DELAY
SETS THE # OF 500 MICROSECOND DELAYS
FROM TRANSFER TO TRANSMIT
RANGE OF VALUES: 0000 0000h to 0000 007Fh
0 to 128 (decimal
57. MASTER JOG SPEED
USE PARAMETER #57 TO SET A JOG SPEED
WHICH CAN BE TOGGLED IN AND OUT.
RANGE OF VALUES: FFFE 7961h to 0001 869Fh
-99,999 to 99,999 (decimal)
Default Value: 0000 00C8h 100 (decimal)
The MASTER JOG Speed is the speed to which
the motor will go when a JOG input is activated on
one of the Digital inputs (any of the seven digital
inputs may be programmed as a JOG input) when the
DFS-1 is in the MASTER mode. If more than one
input is programmed as a JOG input, they must both
be present to activate the Master Jog Speed function
(the inputs are logically ANDed).