FEC Handheld Nutrunner HFC3000 - Page 131

Chapter 6 Fastening Operation
PAGE 6-61
D-No.005 After Fastening Operation Default setting: 000000
*****1: 1 Pulse Reverse
・After the end of fastening, the torque is reversed up to the D-No. 121 [1 Pulse Reverse Torque High
Limit]. The 1 Pulse Reverse is performed at the D-No. 410 [1 Pulse Reverse Speed] for the
D-No. 316 [1 Pulse Reverse Time].
****1*: Reduce Fastening Reaction (priority given to Torque Recovery)
・The torque reaction force of the tool at the end of fastening is suppressed to help reduce operator
fatique, sudden shock to the operator or supporting equipment.
Motor current is decreased gradually after the end of fastening until stopped.
****1*: Torque Recovery
･ After the target is reached, the standard torque is maintained for the D-No. 315 [Torque Recovery
Time]. The fastening speed during execution of the torque recovery is the D-No. 404 [3rd
Speed].
***1**: Servo Lock (Hold)
･ At the end of fastening operation, the motor is locked to prevent rotation of the tool. (if backlash
exists in the transmission, socket or extensions, etc., some rotation could take place depending
on this backlash) The servo lock function is also performed if a reverse operation occurs from
the use of the REVERSE signal.
･ The servo lock can be released by turning “On” the PLC I/O input signals “START,” “RESET,” or
“BYPASS” or turning “STOP” to “OFF”. The fastening result mode D-No. 16 “Servo Lock Flag”
will show “ON” when it is used.
Depending on the controller version, to turn ‘Off’ the Servo Lock after fastening
differs depending on the controller firmware as shown below;
PLC I / O
input signal
Firmware Version
Below V1.305
V1.305 or more
START
releases
releases
RESET
releases
does not release
REVERSE
does not release
does not release
PROGRAM
releases
releases
STOP
releases
does not release
****1*: Recovery Pulse (priority given to Torque Recovery)
・A holding / retightening operation after fastening is performed using a pulsing function.
Pulsing operation cycles at the D-No. 551 [Recovery Pulsing Speed] are executed for the number of
times defined by D-No. 550 [Recovery Pulsing Count].
【Precautions on the After Fastening Operation】
・“Reduced Fastening Reaction” and “Recovery Pulse” operation are not performed
when “Torque Recovery” is used.
If both (Reduced Fastening Reaction and Recovery Pulse) are setup to be used, only
the” Recovery Pulse Operation” is performed.
Caution