FEC DSP1500 (SAN3) - Manual (Page 54)

enFORCE DSP1500 SAN Unit Operation Manual
(Rev. 4) PAGE 4－14
Chapter 4: System Setup and Wiring
4.7.4 Input and Output Signal Explanation
♦ Input Signals
Inputs are sourced (normally high) and activated when pulled low (0VDC).
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.
If a display unit is attached to the SAN Unit, the following will be displayed:
When the STOP signal is turned off during operation, the internal dynamic braking
circuit engages causing the press to immediately stop.
If using a SAN4 Unit with separately wired motor and control input circuits be aware
that when motor power is dropped during operation the press does not come to an
immediate stop due to momentum.
If normal operation requires the motor power to be dropped for safety (IE: interruption
of safety gates, etc.) turn the STOP signal off at the same time the motor power is
dropped so that the dynamic braking circuit stops press motion.
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, the press cycle will be aborted.
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 parameters 2 thru 8 are active, Manual+Start initiates the function
shown in the chart on page 4-16.
A signal will not be accepted during a reset or when in cycle.
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 (Busy signal goes low).
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 page 4-16)
If the START input signal is turned off while in cycle the unit will stop and return
as programmed in the RETURN OPERATION parameter.