ADDR—Interface Address
This parameter provides an identity code for the RS-485 interface. Note that no two controllers communicating with the
same computer can have the same identity code. Ignore this parameter if the controller does not use the RS-485
interface.
LO.SC, HI.SC—Low/High Scale Range
If thermocouple or PT100 is selected as the input type (INPT), these parameters are used to define the range of the set
point adjustment. If linear process input is selected, these parameters are used to define the range of the process value
and set point adjustment. See section 5–14 for more details.
PL.1, PL.2—Power Limit for Heating and Cooling Outputs
These parameters limit the maximum output percentage of power for heating or cooling during warm up and in
proportional band. If the control has relay or pulsed voltage outputs, the percentage of “on” time will be decreased. If the
control has linear current or linear voltage outputs, the actual output levels will be decreased. These are only used for
processes where heating or cooling at full speed would be dangerous or would produce unsatisfactory results. For
normal applications, these parameters are set at 100%.
INPT—Input Type
This is used to program the control for the type of input sensor used.
UNIT—Process Units
This parameter is used to select the units displayed. For linear process input, Pu (process unit) can be selected in
addition to °F or °C.
RESO—Resolution (Set Decimal Point Placement)
This parameter defines the position of the decimal point in the process and set point values. no.dP=no decimal point;
1.dP=one decimal point; 2.dP=two decimal points. Note that 2.dP can only be used for linear process input when Pu is
selected for UNIT.
CON.A—Control Action of Output 1
This selects reverse (heating) action or direct (cooling) action for output 1.
A1.MD, A2.MD—Alarm Mode Selection for Alarm 1 and Alarm 2
This sets the type of alarm required: deviation alarm, band alarm, or process alarm. See section 5–10 for more details.
A1.SF—Alarm 1 Special Function
Use this parameter to select any special functions required for use with alarm 1. Latching or holding alarms can be
selected (see section 5–10), or to.on or to.of can be selected if dwell timer function is required (see section 5–13).
A2.SF—Alarm 2 Special Function
Select hold function or latch function for alarm 2, or select COOL to reconfigure alarm 2 as a cooling output.
CYC, CCYC—Proportional Cycle Time of Output 1 and Cooling Output
Select a proper value for the process in accordance with the output devices used. Note that CCYC is only used if A2.SF
has been set for cooling. See the following section on initial setup for further discussion.
C.PB, D-B—Cooling Proportional Band, Cooling Deadband
Only used if A2.SF has been set for cooling. Otherwise, they may be ignored. See section 5–9 for more details.
Initial Setup
Use the keypad to view the value of each parameter. Use the up and down keys to set the correct value for each
parameter. Note that the new value of each parameter is automatically entered into nonvolatile memory.
The adjustment of proportional cycle time (CYC and CCYC) is related to the speed of the process response and the
output device fitted. For a faster process, it is recommended to use SSR (select SSR drive output) or SCR (select linear
current or voltage output) to drive the load. The relay output is used to drive a magnetic contactor in a slow process. If a
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