Instruction manual

Cascade Controller Option

■ Changed Drive functions

■ Introduction

Installation of the Cascade Controller Option card

into the AFD overrides some existing drive functions.

Changes to the default parameter setting are shown

in the tables below. Data entered into the drive

parameters are used to program the drive and cascade

controller for system operation. The modified parameter

default settings make programming the cascade

controller easier. See Chapter 5, User Interface,for

instructions on programming drive parameters.

In addition, parameters that need to be programmed

for cascade control operation are assembled

sequentially in a new and expanded 44 item Quick

Menu. Programming is simplified by following the

Quick Menu items in sequence for either Standard

cascade control or Master/Slave cascade control.

The new Quick Menu is described in Chapter 6,

AFD and Cascade Controller Card Setup.

New options are also available to stop pumps or fans

controlled in cascade operation. A summary of AFD

changed functionality is presented in this chapter.

Changed Default Settings with the Cascade Controller Option Card

Parameter Description Previous default New default

100 Configuration Open loop Closed loop

201 Minimum output freq. 0.0 Hz 40% of nominal frequency

205 Maximum reference 50/60 Hz 100%

206 Ramp-up time Varies with unit See table below

207 Ramp-down time Varies with unit See table below

304 Terminal 27 (digital input) Safety interlock

/Coasting

stop inverse

Coasting stop, inverse

308 Terminal 53 (analog in V) Reference No operation

314 Terminal 60 (analog in A) Reference Feedback (4-20 mA)

318 Function after time out No function Stop (sequence stop)

417 Feedback Function Maximum Virtual Control Curve

427 PID lowpass filter time 0.01 sec. 0.20 sec.

AFD Type Ramp Up (parameter 206) Ramp Down(parameter 207)

8005/6002 8011/6011 1sec. 1sec.

8016/6016 8062/6062 3sec. 2sec.

8072/6072 8302/6272 5sec. 3sec.

8352/6352 8600/6550 8sec. 5sec.

VLT 8000: Factory setting for US

MG.60.I5.22 - VLT is a registered Danfoss trademark