FEC DSP1500 (SAN3) - Manual (Page 12)

enFORCE Operation Manual
PAGE 4 - 12
Chapter 4: System Setup and Wiring
4.7.3 Input and Output Signal Explanation
♦ Input Signals
Inputs are sourced (normally high) and activated when pulled low (0VDC).
ƒ START：Cycle Start signal (Normally Open)
The unit reads the WORK SELECT signal and SELF-CHECK signal at the start
(“OFF”-> “ON”) of this signal and starts pressing. This signal must be maintained
until the cycle is complete.
The press unit will be in BUSY (in cycle) status after start of press.
In the following conditions the READY output signal is turned “OFF”, and the START
signal input cannot be received:
While stopping
While resetting
Bypass condition
Abnormal condition
If the start signal is turned “ON” while in MANUAL mode, the press will perform the
function defined in the MANUAL operation of the selected WORK SELECT. (See
MANUAL and WORK SELECT chart on the following page)
If the START input signal is turned off while in cycle the unit will stop and return
as programmed in the RETURN OPERATION parameter.
ƒ STOP: Emergency Stop signal (Normally Closed)
This signal must be active (on) for controller operation. When it is inactive (off),
controller operation will stop, press motion stops and input/outputs will be disabled. If
the signal is turned off during a press cycle, press motion stops but the cycle data
collected is retained. A judgment will be made based upon the limits set in the active
parameter.
ƒ MANUAL: Manual Mode signal (Normally Open)
While the signal is “ON”, the mode is set to MANUAL.
If parameter 1 (no Work Selects are selected) is active, Manual+Start initiates home
position search. If parameter 2 thru 8 is active, Manual+Start initiates the function
shown in the chart on the following page.
A signal will not be accepted during a reset or when in cycle.
ƒ RESET: Reset signal (Normally Open)
When active (on), this signal will clear all data and discrete outputs. A Zero Check of
the force transducer will be performed. During the Zero Check, 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. This signal has to be input for
200~500ms.
Do not input this signal between cycles due to the potential for data loss.
If the reset signal is turned “ON” while in cycle, press motion stops.
ƒ SELF CHECK OFF: Load Cell automatic check “OFF” signal
When this signal is “OFF” (or unconnected) at the time of inputting a START signal, the
home-position voltage level and CAL voltage level of the load cell is automatically
checked before the press cycle begins.
If the automatic check of the load cell is not required, turning “ON” this signal at the
time of inputting a START signal will cause this test not to be performed.
*Allow at least 10ms from the time this signal is turned on before turning on the START
signal. Do not turn this signal off at least until BUSY goes “HIGH”.
ƒ BYPASS: Press off signal (Normally Open)
When active (on), all functions of the press controller are disabled and a BYPASS
signal is output, making it impossible to start the press.
If the signal becomes active during a press cycle, the press cycle is stopped.