Red-lion PCU Manuel d'utilisateur télécharger pdf (Page 35)

Example: Chart Record Process Display Value (0 to 10 VDC):

The process range is 300-700. Programming 300 for ANLO (0 VDC

value) and 700 for ANHI (10 VDC value) yields full scale deflection for a

chart recorder (0 to 10 VDC). The 0 to 10 VDC output is assigned to

transmit the input reading (ANAS = INP).

Example: Linear Control Output (4 to 20 mA):

A linear DC input power control unit is used for process control. An

outputcontroldeadband of ±2.0% and anoutputupdate time of10 seconds

is desired. The following set-up values illustrate the configuration:

ANAS = OP

ANLO = 0.0%

ANHI = 100.0%

ANdb = 2.0%

ANUt = 10 seconds

LOCKOUTS MODULE (3-LC)

The controller can be programmed to limit operator access to various

parameters, control modes, and display contents. The configuration of the

lockouts is grouped into three sections: Lower Display Lockouts, Protected

Mode Lockouts and Hidden Mode Lockouts.

Lower Display Lockouts (SP, OP, IN-2, dEv, bdSP)

Thecontentsofthesecondarydisplaycanbechangedinthenormaldisplay

mode by successively pressing the DSP button. This action scrolls through

the possible display parameters, when enabled.

The parameters can be set for one of the following:

LOC (Lockout) – Prevents the parameter from appearing in the

secondary display.

rEd (Read only) – Parameter appears, but cannot be modified.

Ent (Entry) – Parameter appears and can be modified.

The lower display content possibilities are:

SP – Setpoint Value

OP* – % Output Power

IN-2* – Second analog input (Remote setpoint)

dEv* – Setpoint Deviation

bdSP – Blank Display

If all parameters are set to lock “LOC”, the display remains on the last

parameter that was viewed.

*Note: These parameters are model specific and may not appear in the

programming sequence.

Note: If a parameter is active in the lower display and is then subsequently locked

out, press “DSP” once in the normal display mode to remove it from the display.

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Figure 15, Linear DC Output

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Red-lion PCU Manuel d'utilisateur Page 35