FEC AFC1200 - Manual (Page 22)

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6.4 Reverse Functions
The AFC1200 System is capable of reverse operations using three different control methods.
There are three independent reverse presetting options to choose from when performing
these operations. The following list details the conditions under which each may be used:
P Manual switch located on the front of the Main Unit (NO. 1 REVERSE)
P PLC REVERSE input signal (NO. 1 REVERSE)
P Fastening Sequence program (NO. 1, 2, and 3 REVERSE)
CAUTION: REV3 must not be used as a reject backout on a rundown sequence.
REV3 will perform a judgment that may result in an erroneous accept output.
NO.1 REVERSE
NO.1 REVERSE NO.2 REVERSE NO.3 REVERSE
TIME TIME TIME
NO.2 REVERSE NO.3 REVERSE
[ ] RPM
[ ] REV [ ] REV [ ] REV
REVERSE ANGLE
[ ]
HIGH [ ]
LOW[ ]
REVERSE TORQUE
HIGH [ ]
LOW[ ]
REVERSE START TORQUE
[ ]
[ ] RPM [ ] RPM
[ ] SEC [ ] SEC [ ] SEC
FIG. 6-4 Reverse Functions
Lower control limit for reverse torque monitoring. Set according to
the engineering specification REVERSE TORQUE LOW
Upper control limit for reverse torque monitoring. Set according to
the engineering specification REVERSE TORQUE HIGH
Lower control limit for reverse angle control. Set according to the
engineering specification LOW (ANGLE)
Upper control limit for reverse angle control. Set according to the
engineering specification HIGH (ANGLE)
Once REVERSE START TORQUE is reached, the System will back
out for this amount. Set to a value which will provide the proper
duration of backout according to the engineering specification REVERSE ANGLE
Once this torque is reached, the System will back out for the amount
specified by Reverse angle. Set to a value which will provide the
proper duration of backout according to the engineering specification REVERSE START TORQUE
The desired duration of reverse operations may be set in either
seconds or number of revolutions. Preset in conjunction with RPM to
attain the desired backout. NO. 1 REVERSE will back out for as
long as the manual reverse input is maintained REVERSE TIME
The desired speed may be uniquely set for each of the three reverse
modes RPM
RECOMMENDATION FUNCTION
Chapter 6: Fastening Instructions
Page 6-22