Vibratory Track Screw Feeder FF/FM503H ver2
10
6. Explanation of operation
This chapter explains the operation of the major parts of the FF/FM503H. (Refer to “6.2 Operation time
chart” described below.)
6.1. Operation of each part
The operations of major parts are shown as follows. The (Pa.**) in the explanation represents a parameter
number that allows setting change or adjustment. For details of parameter setting, refer to “8. Setup
procedures”.
6.1.1. Hopper track
The hopper track starts swaying in a preset time (Pa.85) after the photoelectric sensor on the track is turned on
(by the absence of screws), and stops swaying in a preset time (Pa.86) after the photoelectric sensor is turned
off (by the presence of the screws).
If the swaying continues exceeding a preset time (2 minutes) with the photoelectric sensor staying ON, the
machine enters an intermittent operation mode with predetermined intervals (Pa.88 and Pa.89, which are
specified by the “Hopper track intermittent running ON time setting” and “Hopper track intermittent running
OFF time setting” respectively. If the swaying continues further for a long time (about 2 hours), the machine
enters a suspend mode assuming that there are no works (screws) in the basket. “LED4 (=4
RUN)” LED on
the setup panel flashes at 1 second intervals. (Refer to “10.1 Malfunction”.) To exit from the suspend
mode, turn on the machine again or input the screw feeding signal.
6.1.2. Vibrator
The track vibrator starts vibration in a preset time (Pa.85) after the photoelectric sensor on the track is turned
on (by the absence of screws), and stops vibration in a preset time (Pa.86) after the photoelectric sensor is
turned off (by the presence of the screws).
Separately from the above-mentioned operation, this vibrator starts operation at the same time when the screw
feeding solenoid valve is activated, and continues until a preset time (Pa.87) expires after the screw feeding
solenoid valve stops. This is a preparation for next feeding.
6.1.3. Screw feeding
6.1.3.1. For automatic type
The screw feeding solenoid valve and the track driving vibrator (to be more precise, the screw feeding signal
ON time + Pa.87 for the track driving vibrator) continue operations (irrespective of Pa.41) while a screw
feeding signal is being input into the No. 7 pin of the external I/O receptacle (CN IO).
6.1.3.2. For hand driver type
With the screw feeding signal from the switch in the hand driver tool, the screw feeding solenoid valve and the
track driving vibrator (to be more precise, Pa.41 + Pa.87 for the track driving vibrator) start operations for a
preset time (Pa.41).
(1) For hand driver type (micro switch)
Such a contact is used for the screw feeding signal that turns ON during screw tightening operation.
When this contact turns OFF → ON → OFF, the screw feeding starts and the screw feeding solenoid
valves and the track driving vibrator (to be more precise, Pa.41 + Pa.87 for the track driving vibrator)
operate for a preset time (Pa.41).
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