Rockford Systems, LLC
1-800-922-7533 (U.S.A. only)
13
FLAG
The flag attaches to the front of the
actuator and is held in position by a set
screw. Before inserting the flag, remove
the pushbutton plate and the support
foot. Use the allen wrench provided
(located in the bottom of the actuator)
to loosen and tighten the set screws.
PRINTER
The printer plugs into the
RS-232 port on the front of the meter with the furnished
cord and plug. No other power supply is needed. Select
YES in the
PM PRINT VALUES
sub menu to activate the
printer. Refer to page 23 in the
MM PRINT MANAGER
programming section of this manual for details.
SOFTWARE FLOWCHART
Refer to page 16 of this manual for the software
flowchart. Next, refer to the Programming Section of this
manual (pages 16 - 26) for details on each MM (Main
Menu).
DEFINITIONS
Actuator
– An electro-mechanical device which will
push
a palm button switch (typically a
stop
switch) or
release
a palm button switch (typically using an
inch
control or
one of the two-hand controls on the machine) to initiate
stopping when the sensor signals the proper point in the
cycle to begin the test.
Flag
– A device that will, when connected to the actuator
and held just outside the sensing field of a presence sensing
device, initiate a stop signal by blocking the sensing zone
at the proper point in the stroke of the machine.
Hand Speed Constant
– The generally agreed upon speed
at which the operator’s hands move toward the point of
operation. Defined by OSHA as 63 inches per second.
Milliseconds (ms)
– 1/1000 of a second (0.001 sec.)
OSHA or ANSI Safety Distance Formula
– See pages 6 - 8
for details.
Point of Operation
– The pinch point created by die or tool
closure, guide pins, etc., closest to the operator.
Presence Sensing Device
– A radio frequency,photo-
electric (light curtain) or other device that will detect the
presence of an object. These devices are usually mounted
in a way that creates an electrical control stop signal when
its field of sensitivity is interrupted.
Safety Distance (Ds)
– The OSHA or ANSI required
minimum distance between the operator’s two-hand
controls, presence sensing device, safety mat, emergency-
stop device, guard interlock, and the point-of-operation
hazard.
Sensor
– A transducer that converts position, length, or
distance into an electrical signal proportional to cable
extension or retraction rate. This is done by converting
linear motion into rotary motion.
SPM (Start Point of Measurement)
– The point in the stroke
where an automatic stop signal is given (usually on the
downstroke of a power press or press brake).
Stop-Time ( Ts )
– The total time (measured in milliseconds)
required to stop a machine.
Stopped Velocity
– The ram velocity at the time the unit
stops measuring.
Photo 2.5
SECTION 2—INTRODUCTION
Stop-Time Measurement Device
