Technical information

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down to be used. If Speed up/down is

used, the speed change always follows

ramp 2 (3-51 Ramp 2 Ramp Up Time and

3-52 Ramp 2 Ramp Down Time) in the range

0 - 1-23 Motor Frequency.

NOTE

When Freeze output is active, the

frequency converter cannot be

stopped via a low ‘start [13]’ signal.

Stop the frequency converter via a

terminal programmed for Coasting

inverse [2] or Coast and reset, inverse

[3].

[21] Speed up For digital control of the up/down speed is

desired (motor potentiometer). Activate this

function by selecting either Freeze

reference or Freeze output. When Speed up

is activated for less than 400 msec. the

resulting reference will be increased by 0.1

%. If Speed up is activated for more than

400 msec. the resulting reference will ramp

according to Ramp 1 in 3-41 Ramp 1 Ramp

Up Time.

[22] Speed down Same as Speed up [21].

[23] Set-up select

bit 0

Selects one of the four set-ups. Set par.

0-10 to Multi Set-up.

[24] Set-up select

bit 1

Same as Set-up select bit 0 [23].

(Default Digital input 32)

[32] Pulse input Select Pulse input when using a pulse

sequence as either reference or feedback.

Scaling is done in parameter group 5-5*.

[34] Ramp bit 0 Select which ramp to use. Logic “0” will

select ramp 1 while logic “1” will select

ramp 2.

[36] Mains failure

inverse

Select to activate function selected in

14-10 Mains Failure. Mains failure is active in

the Logic “0” situation.

[37] Fire mode A signal applied will put the frequency

converter into Fire Mode and all other

commands will be disregarded. See 24-0*

Fire Mode.

[52] Run

Permissive

The input terminal, for which the Run

permissive has been programmed must be

logic “1” before a start command can be

accepted. Run permissive has a logic ‘AND’

function related to the terminal which is

programmed for START [8], Jog [14] or

Freeze Output [20], which means that in

order to start running the motor, both

conditions must be fulfilled. If Run

Permissive is programmed on multiple

terminals, Run permissive needs only be

logic ‘1’ on one of the terminals for the

function to be carried out. The digital

output signal for Run Request (Start [8], Jog

[14] or Freeze output [20]) programmed in

parameter group 5-3*, or parameter group

5-4*, will not be affected by Run Permissive.

NOTE

If no Run Permissive signal is applied

but either Run, Jog or Freeze

commands is activated, the status line

in the display will show either Run

Requested, Jog Requested or Freeze

Requested.

[53] Hand start A signal applied will put the frequency

converter into Hand mode as if button

Hand On on the LCP has been pressed and

a normal stop command will be overridden.

If disconnecting the signal, the motor will

stop. To make any other start commands

valid, another digital input must be assign

to Auto Start and a signal applied to this.

The Hand On and Auto On buttons on the

LCP has no impact. The Off button on the

LCP will override Hand Start and Auto Start.

Press either the Hand On or Auto On button

to make Hand Start and Auto Start active

again. If no signal on neither Hand Start nor

Auto Start, the motor will stop regardless of

any normal Start command applied. If

signal applied to both Hand Start and Auto

Start, the function will be Auto Start. If

pressing the Off button on the LCP the

motor will stop regardless of signals on

Hand Start and Auto Start.

[54] Auto start A signal applied will put the frequency

converter into Auto mode as if the LCP

button Auto On has been pressed. See also

Hand Start [53]

[55] DigiPot

Increase

Uses the input as an INCREASE signal to the

Digital Potentiometer function described in

parameter group 3-9*

[56] DigiPot

Decrease

Uses the input as a DECREASE signal to the

Digital Potentiometer function described in

parameter group 3-9*

[57] DigiPot Clear Uses the input to CLEAR the Digital Potenti-

ometer reference described in parameter

group 3-9*

[60] Counter A (up) (Terminal 29 or 33 only) Input for increment

counting in the SLC counter.

[61] Counter A

(down)

(Terminal 29 or 33 only) Input for

decrement counting in the SLC counter.

[62] Reset Counter

Input for reset of counter A.

[63] Counter B (up) (Terminal 29 and 33 only) Input for

increment counting in the SLC counter.

[64] Counter B

(down)

(Terminal 29 and 33 only) Input for

decrement counting in the SLC counter.

[65] Reset Counter

Input for reset of counter B.

Parameter Description

VLT

HVAC Drive Programming Guide

64 MG11CD02 - VLT

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