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bursts start at 5% output power and step up the output 5% every 30 seconds.
•
The soft start when the controller is in Normal (closed loop) mode lasts five minutes or
until the process temperature reaches 200
•
The soft start when the controller is in Manual (open loop) mode continues until the
output is the lower of 50% or the target Manual mode output percent.
By default, a soft start will be executed:
•
every time the controller starts (after being taken out of Idle) and the process value is less
than 200
F (93
C), and
o
o
•
every time the controller is returned to Normal (automatic) operation and the PROC
(displayed as PROCESS on RMB/1) is less than 200
1.2.4
PROGRAMMABLE BOOST FUNCTION
Every RMB/X Hot Runner controller supports a boost function. For each zone you can use the
Boost Config menu to configure a special setpoint (closed loop boost) or a special fixed output
percentage (open loop boost) to be used when the boost button
The boost function will remain active until:
•
the configured boost duration time has expired, or
•
you use the mode/enter button
of the boost duration.
1.2.5
PROCESS-PROTECTION FEATURES
Process-protection features are standard on all RMB/X controllers. These features include:
•
high and low deviation alarms
•
high temperature safety limit
•
loop break detection
•
failsafe operation in case of sensor problems
1.2.6
SECURITY
The RMB/X front panels include buttons that can be used to change the selected zone's setpoint
and mode, and to boost the output temporarily by a configurable amount. Users who know the
Supervisor password can limit access to these buttons on the front panel, plus limit configuration
access. (Units are shipped with password protection disabled.)
1.3
WHAT HAPPENS WHEN YOU POWER UP THE CONTROLLER
When an RMB/X Hot Runner controller is powered up using the switch on the back, all LEDs and
all elements in the LCD display light briefly, and then software versions (of the display and the
controller hardware) are displayed.
At the conclusion of the startup process, the process values and setpoints for all zones are
displayed. Only the green LED for the display unit of measure (Fahrenheit or Celsius) is lit.
All zone outputs will be off because the unit starts up with all zones in the Idle state.
Briefly pressing the run/idle button
Idle in the Run state. (Pressing the button again for at least two seconds puts all zones in Idle.)
In each zone's column of LEDs, the green LED in the closed loop
to indicate the type of control.
The green LEDs in the output
For more information about the user interface, see the Section 3.
When zones go into the Run state, the effect on each zone's output depends on the value of the
Startup Mode parameter configured using the Control Config menu. See section 5.4 for details.
F (93
C).
o
o
F (93
o
to take a zone out of boost mode before the expiration
on the front of the case puts all zones that are currently
row indicate whether the zones' outputs are on (LED lit) or off.
C).
o
is pressed.
or open loop
row is lit
5
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