FEC AFC1500 - Manual (Page 54)

Multi Unit Input Signals
In Port 3 16
In Port 2 15
In Port 1 14
External Sequence Input (Normally Open)
These four (4) signals are external inputs to the
fastening sequence. When a [PLC INPUT WAIT]
instruction is programmed in the fastening sequence, it
will stop until the designated external input is active. In Port 0 13
Sets the cycle count to Zero. Cycle Count
Clear 10
Cycle Count Input (Normally Open).
The System cycle counter will increment each time this
signal is input if the CYCLE COUNT UP is set to PLC
SIGNAL in the Multi Unit. The Cycle Count input
requires a pulse of at least 50 ms to increment the
counter. If the CYCLE COUNT UP is set to AUTO, the
cycle counter increments automatically at the end of
every fastening. Cycle Count Up 9
Seq 3 8
Seq 2 7
Seq 1 6
Sequence Select Input (Normally Open).
These 4 inputs form a binary code which is capable of
selecting up to 16 different operation sequences. Refer
to Sequence Select Table. Seq 0 5
Start Cycle Input (Normally Open).
The Start input automatically resets the previous cycle,
clears all data to zero, and initiates the next fastening
cycle. The Start input requires a pulse of 200~500
milliseconds if the Multi Unit is set up for AUTOMATIC
Start input. If it is set up for DEADMAN (hand-held
operations) input, the Start input must be maintained
"on" for the entire cycle. Typically, this signal is held on
until confirmation of the “Busy” signal is received. Start 4
Reverse Spindle Rotation Input (Normally Open). All
spindles will rotate in an opposite direction (of
fastening) for as long as this signal is activated (on) and
maintained. The Reverse input functions the same as
the reverse pushbutton on the front of the Multi Unit. Reverse 3
Reset Input (Normally Open).
When active (on), this signal will clear all fastening
data, and discrete outputs. A Zero Check of all torque
transducers will be completed. During the Zero Check,
the CHECK lamp will illuminate, the READY signal will
turn OFF, and the ACCEPT or REJECT lamp will light
to indicate the result of the Zero Check. If the System
has been disabled by an Abnormal output, the System
will not return to normal operation until the Abnormal
condition has been corrected, and this signal has been
input for 200~500 ms. Do not input this signal between
cycles, as part of an automatic cycle due to the
potential for fastening data loss. Reset 2
Emergency Stop Input (Normally Closed).
Signal MUST be Active to perform fastening.
When this signal is inactive (off), all Multi Unit operation
ceases, all spindles in motion will stop, and all
communication ports & input/outputs will be disabled. Stop 1
Multi Unit Input Signals
Chapter 4: I/O & Output Data
54