Protected Parameter Mode Reference Table. RED LION CONTROLS TCU

Below you will find brief information for Temperature Controller TCU TCU. The TCU is a multi-purpose series of industrial control products that are field-programmable for solving various applications. This series of products is built around the concept that the end user has the capability to program different personalities and functions into the unit in order to adapt to different indication and control requirements. You can use it for remote setpoint, ratio control, temperature ratio control, cascade control, external cascade control, internal cascade control and much more.

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PROTECTED PARAMETER MODE

The Protected Parameter Mode is accessed from the normal display mode by pressing the PAR button with program disable active. In this mode, the operator has access to the list of the most commonly modified controller parameters that have been “unlocked” in the configuration parameter lockouts module. Depending on the code number entered in the lockout

Protected Parameter Mode Reference Table

Display Parameter

Prop

Intt dErt

Pb-2

It-2 dt-2

SP-2

Proportional

Band

Integral

Time

Derivative

Time

Proportional

Band #2

(Secondary)

Integral

Time #2

(Secondary)

Derivative

Time #2

(Secondary)

Internal

Cascade

Directed

Setpoint

Range and units (Factory

Setting Value)

0.0 to 999.9% of selected input range

(4.0)

0 to 9999 sec.

(120)

0 to 9999 sec.

(30)

0.0 to 999.9% of scaled input range

(4.0)

0 to 9999 sec.

(0)

0 to 9999 sec.

(0)

-999 to 9999

(N/A)

Description/Comments

0.0% is ON/OFF control. If using

ON/OFF mode, set control hysteresis appropriately. This parameter does not appear if locked (LOC).

0 is off. This parameter does not appear if proportional band = 0.0% or locked (LOC).

0.0% is ON/OFF control. Second

Analog Input models only.

0 is off. This parameter does not appear if proportional band #2=

0.0%, or if locked (LOC). Second

Analog Input models only.

0 is off. This parameter does not appear if proportional band #2=

0.0%, or if locked (LOC). Second

Analog Input models only.

Second Analog Input models only.

Read only parameter.

module, access to the unprotected parameter mode and hence, the configuration parameter modules is possible. The controller returns to the normal display mode if the unprotected mode and configuration modules cannot be accessed. This mode cannot be accessed if all parameters are locked out in Configuration Module 3.

Display Parameter

rtio bIAS

AL-1

AL-2

Code

End

Remote setpoint ratio multiplier

Remote setpoint bias offset

Alarm 1 value

Range and units (Factory

Setting Value)

0.001 to 9.999

(1.000)

0 to 9999

(0)

Description/Comments

Second Analog Input models only.

Alarm 2 value

Access code to unprotected mode

Unit returns to normal display mode.

-999 to 9999

1 or 0.1 degree

(0)

-999 to 9999

1 or 0.1 degree

(0)

0 to 250

(0)

Alarm option models only.

This parameter does not appear if the alarm option is not specified, the cooling option is installed, or if locked (LOC).

To gain access to unprotected mode, enter the same value for

Code as entered in parameter lockouts. This parameter does not appear if zero is entered in code parameter lockout.

Brief display message display mode.

Key features

Field-Programmable
Multipurpose
PID Control
Auto-Tune
Remote Setpoint
Cascade Control
Alarm Outputs
Serial Communications
Heater Current Monitor
Valve Positioner

Frequently asked questions

The optional Heater Current Monitor serves as a digital ammeter for heater current monitoring. It can be used with a current transformer accessory to signal when the heater or heater control devices have failed, before damage to process material occurs.

The Motorized Valve Positioner offers two control modes: position control, which uses the slidewire feedback signal supplied with the positioner, and velocity control, which does not use the slidewire feedback signal.

The optional Second Analog Input can be configured as either a Remote Setpoint signal or a Secondary Process signal. This allows for various control applications such as ratio control, master setpoint/multiple slave operation, external cascade control, and internal cascade control.