Specifications

11
Series RMB Hot Runner Controller Instruction Manual
parallel the interactions expected while the
controllers are in use.
If you need to stop the Autotune, press the
MODE key until the controller is in
standby. (When you are ready to
Autotune, cycle the power to the
controller.)
If you are installing a single replacement
controller, let the Autotune proceed without
interruption. During Autotune, the process
value alternates with tun.
At the conclusion of a successful
Autotune, the flashing tun disappears.
The display reverts to the normal mode
operating display: PV on top line, SP on
lower line. The proportional band and rate
values calculated by the controller during
the Autotune have been saved. (The
integral (reset) action for PID control is
always set to five times the rate value in
an RMB controller.) Autotune is disabled.
(If the Autotune is not successful, output
goes to 0%, and you will see an error
code; see 5.8.)
RMB controllers do not require calibration.
The controller is ready to use.
Displayed Code Error Condition Operator Action
or Message
Highest Priority – Controller has detected a problem with its own operation. All errors of this type
shut down controller activity (except for display of error message).
Err PROM checksum error Cycle power to clear the message.
0100 Note the error code and call for service.
Err RAM error Cycle power to clear the message.
0101 Note the error code and call for service.
Err Default Pid menu parameter Cycle power to clear the message.
0202 values were loaded Because the At.OP (Autotune
automatically, because the operation) value will be set to “once”,
controller found corrupted the controller will tune itself.
values stored on the EEPROM.
(This message is not displayed
when you use SW2-switch 5 to
set the default values
intentionally.)
5.1 Introduction
Usually the controller displays the process
variable on the top line and the setpoint on
the lower line of the display. You can see
other values on the lower line by pressing
the DISPLAY key.
However, when the controller detects a
problem with the input or output, or with its
own operation, messages and codes are
displayed to alert you to conditions that
require your immediate attention.
5.2 Summary of Error
Codes
If the controller detects a problem, the
highest priority error will be displayed.
The possible errors and suggested
operator actions in response are
summarized below.
When one of these error codes is dis-
played, the output is 0%. In the case of
the Out SHrt (output short) and bAd Htr
(bad heater) errors, the output failure relay
interrupts the output.
5. Error Messages and Codes