BM-1600 Time Based Brake Monitor
Overview
The BM-1600 is a time-based brake monitor that utilizes a high
resolution encoder and controller to measure the brake stopping time in milliseconds and also the RPM/SPM of
the press. The rotary encoder is attached to the subject machine and is driven on a 1:1 ratio by the power
press crankshaft. The brake stopping time of the machine will be displayed on every stop and can be easily
read on the bright red light emitting diode (LED) display on the front panel of the unit. The RPM/SPM of the
machine will be displayed during the machine cycle.
Individual LED indicators are visible and easily define the existing status of the unit during
the press cycle (shown above). All system programming and diagnostics are front panel mounted and controlled
which will minimize downtime while enhancing operator safety and press maintenance. All operating mode
selections are supervisory controlled by a keyed selector switch which meets all OSHA and ANSI standards for
mode selection supervisory control.
To program the Brake Warning Time and the Brake Limit Time set points, the user inserts the
programming key into the lock and turns to the desired position (status LED illuminates). By depressing the
+/- buttons to the desired time setting and turning the key back to the Run position, the new warning/failure
time set points are saved. All errors and time value set points are permanently stored in the EEPROM memory
which does not require a battery backup. The user cannot change or re-program the Brake Warning or Brake
Limit set points while the encoder is in motion, which is an additional safety feature.
The dual force-guided captive contact safety output relays of the BM-1600 are always
de-energized when the programming key is not in the Run position. When the key is in the Run position, the
safety output relays are always energized as long as there are no internal or external faults detected. When
a fault is detected, it is recorded within the system in non-volatile memory along with the last stopping
time. If the power to the Brake Monitor System is removed and re-applied, the last error to occur will come
back up and prevent any further use until the programming key is used. Only the key turned to the reset
position can clear a fault. If no fault occurred but the programming key is moved into the reset position,
the output relays will de-energize as a safety feature. Motion Detection will still be monitored while in the
Reset position even if the encoder is turning.
OSHA/ANSI Compliance
The BM-1600 system complies with OSHA code 1910.217 and ANSI Code B11.1-2000 for brake
monitoring and control reliability standards. The unit will automatically prevent the activation of a
successive stroke if the stopping time deteriorates beyond the brake limit set point. Required on any press
that has a single stroke mode and uses either a two hand control, light curtain or type B gate
system.
Non-volatile EEPROM Memory
All diagnostic faults and brake set points are permanently saved in non-volatile memory which
does not require battery backup. Information is retained indefinitely after a power loss or machine
shutdown.
Advanced Design
The advanced circuitry and user friendly design on the BM-1600 allows both programming and
status monitoring to be performed from the front of the compact panel. There is no need to enter the control
panel to adjust switches or thumbwheels which will enhance both safety and productivity.
System Self Diagnostics
Control displays status and system fault codes on the LED display. A detailed definition, cause
and cure listing is supplied within each installation and operation manual.
Predictive Maintenance Diagnostic Tool
The unique "brake warning" feature on the BM-1600 allows for predictive maintenance to be
scheduled on the machine, which will minimize downtime. Factors which will be monitored and affect stopping
time: machine cycle speed, counterbalance air supply, tooling weight, clutch air supply, exhaust
restrictions, brake wear adjustment and clutch wear adjustment.
90° Stop Built-in
The built-in 90° press stop feature initiates a stop signal at the 90° position in the
downstroke. This is required information when calculating the location of point of operation guarding systems
or palm button assemblies.
270° Down from Top Stop Test
Allows the press to travel 630° which is 1-3/4 times around. The press will start to stop at the
270º mark. This is used to check for proper counter balance.
Complete Package Supplied
Everything you need to install and operate the BM-1600 is supplied.
- BM-1600 Brake Monitor Controller
- Model E-160 Encoder
- 20' of encoder cable
- Dimensional and technical data
- Installation and operation manual
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