Thermal Care Aquatherm RQE, Operation, Installation, And Maintenance Manual

Page: 11 / 24

7
Table 1 - User Parameters (continued)
Category Screen
Number
Parameter Default
Value
Range Description
Additiona
l Settings
6/6
Deviation
Actn Warn None
Warn
Alarm Allows the user to select how the TCU responds to a deviation condition (as
defined in screen 1/6 above). Warnings are visible on the screen, but have no
effect on machine operation. Alarms shutdown the machine and require user
intervention to reset.
Mold Purge
T/O 60 sec 1 to 999 After mold purge is started, this is the max time that it can run before being
automatically cancelled. Note that the user can stop mold purge at any time.*
*Only visible on menu if mold purge option is installed.
Diagnostics No No or Yes Select "Yes" if you would like to enter the diagnostics menu.
Load
Defaults No No or Yes Select “Yes” if you would like to load defaults for all user parameters. If you select
“Yes”, all your customized settings will be permanently lost and default
parameters will be used instead. The controller will reboot after implementing
default settings.
Factory
Menu --- --- Used to enter a password for a factory configuration menu.
Table 2 - Factory Parameters
Category Screen
Number
Parameter Default
Value
Range Description
Included
Options
1/2
MP Installed No No or Yes
Allows the factory to set whether or not mold purge is installed as an
option.
Setpoint Max 250°F 40 to 250 Maximum permitted machine setpoint.
Setpoint Min 40°F 40 to 250 Minimum permitted machine setpoint.
Cool-Heat Rto 1.25 0.1 to 10.0
Describes the effectiveness of cooling vs effectiveness of heating. Having
the correct value here enhances the performance for the PID algorithm.
For example, if the TCU’s cooling BTU removal happens at twice the rate of
the TCU’s heating BTU addition, this number should be set to 2.0. Systems
with small heaters and plentiful, cold cooling water may want a value of
1.5. Alternatively, warm cooling water or a very powerful heater would
work best with a value of 0.75. A value of 1.0 means there is no distinction
between heating/ cooling and the PID works in a very traditional manner.
Conduct any experimentation to set this value at lower process
temperatures.
Dynamic Mult: 1.75 0.0 to 10.0
This parameter helps the TCU achieve setpoint quickly and without
overshoot across the entire temperature range of operation. This factor
multiples the “Cool-Heat Rto” set in the parameter above at high
temperatures. For example, if “Dynamic Mult” is set to 1.75, a Cool-Heat
Rto of 1.25 will actually become 2.19 (1.25 x 1.75 = 2.19) when the TCU is
running at a process temperature of 250
°
F. Set to zero to disable all
dynamic effects, in which case parameter “Cool-Heat Rto” will be solely
responsible and at a fixed value across the entire temperature range.