Up to 8 setpoints can be configured. Each has a variable text prompt, units, decimal position, limits, and “normal display” display option. Whenever the PROMPT TEXT, as configured in SETPOINTS, is not blank, the setpoint

will be displayed in the key prompts.

The setpoints are not inherently associated with a controller, so they can also be used for ratios, direct drive outs (to a current output), or any other purposes. Setpoint changes can be inhibited via the ENABLES and PASS-

WORDS.

The SETPOINTS included in the prompts are the operator changeable values. The setpoints included in the “normal display” are for display purposes only, and both the currently selected setpoint and the internal ramping setpoint can be displayed.

Control State Access provides an easy and quick way to change controller states (automatic to manual, local setpoint to remote setpoint), via the Display key. When the default control actuator settings are used, they affect the actuators which change the controller states. Note that although the default settings imply a one-to-one correspondence between control state access numbers and controller numbers, this is not necessarily the case. Up to four Control State Accesses may be configured and all four are initially set. If all four are not to be used, the unused should be changed to “blank”.

EXAMPLE:

Let’s consider auto/manual for controller 1 (C1).

The first would be using a remote contact closure input to switch between auto and manual control. This method requires that an input be used for Switch Contact. To configure, set an unused INPUT TYPE/RANGE to SWITCH CONTACT (found in INPUTS part of CONFIGURATION), then set C1 MANUAL ACTUATOR to SWx (x= number of Input Variable set earlier).

A second and possibly more convenient method of changing states would be the “CONTROL STATE ACCESS” programming capability. The CONTROL STATE ACCESS capability is configured in CONFIGURATION and used

via the

 

key. To configure:

 

 

 

Set C1 MANUAL ACTUATOR, found in CONTROLLERS, to CA1F1. Next, set CA1 LINE 1 TEXT, found in

CONTROL STATE ACCESS, to CONTROLLER 1 (DEFAULT), CA1 LINE 2 TEXT to A/M (DEFAULT) and

 

CA1 F1 KEY USAGE to C1 AUTO/MANUAL (DEFAULT). NOTE: If only one control is being utilized, it is

 

suggested that the remaining prompts be blank, otherwise they will be displayed.

 

 

 

 

 

Edition 3

13-2

Section 13

Rev G

Page 236
Image 236
Anderson Manufacturing AV-9000 manual Example, 13-2, Words