another digital input must be assign to
Auto Start
and a signal applied to this.
[
Hand On
] and [
Auto On
] have no impact.
[
Off
] will override
Hand Start
and
Auto Start
.
Press either [
Hand On
] or [
Auto On
] 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
[
Off
] 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 [
Auto On
]
has been pressed. See also
[53] Hand Start
.
[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*
[62] Reset Counter
A
Input for reset of counter A.
[65] Reset Counter
B
Input for reset of counter B.
[66] Sleep Mode
Forces frequency converter into Sleep Mode
(see parameter group 22-4*, Sleep Mode).
Reacts on the rising edge of signal applied!
[78] Reset
Preventive
Maintenance
Word
Resets all data in
to 0.
The below setting options are all related to the Cascade
Controller. Wiring diagrams and settings for parameter, see
parameter group 25-** for more details.
[120] Lead
Compressor
Start
Starts/Stops the Lead Compressor
(controlled by the frequency converter). A
start requires that also a System Start
signal has been applied e.g. to one of the
digital inputs set for
[8] Start
!
[121] Lead
Compressor
Alternation
Forces alternation of the lead Compressor
in a Cascade Controller.
Lead Compressor
Alternation
, 25-50, must be set to either
[2] At Command
or
[3] At Staging or At
Command
.
25-51 Alternation Event
can be
set to any of the four options.
[130
-
132]
Compressor 1
Interlock -
Compressor 3
Interlock
For all 3 setting options below,
25-90 Compressor Interlock
, must be set to
[1] On
. The function will also depend on
the setting in 25-06, Fixed Lead
Compressor. If set to
[0] No
, then
Compressor 1 refers to the Compressor
controlled by relay RELAY1 etc. If set to
[1]
Yes
, Compressor 1 refers to the
Compressor controlled by the frequency
converter only (without any of the build
in relays involved) and Compresso r2 to
the Compressor controlled by the relay
RELAY1. Variable speed Compressor (lead)
cannot be interlocked.
See below table:
Setting in
parameter
group 5-1*
Setting in par. 25-06
[0] No
[1] Yes
[130]
Compressor
1 Interlock
Controlled
by RELAY1
(only if not
lead
Compressor)
Frequency
Converter
controlled
(cannot be
interlocked)
[131]
Compressor2
Interlock
Controlled
by RELAY2
Controlled
by RELAY1
[132]
Compressor3
Interlock
Controlled
by RELAY3
Controlled
by RELAY2
Table 3.11
[139] Compressor 1
Inverse
Interlock
Interlocks compressor 1 of the Pack
Controller when digitally low and issues
Warning [W219]. When inversely
interlocked, compressor 1 (the lead
compressor) is staging according to the
Fixed Speed Neutral Zone ( 25-23).
[140] Compressor 2
Inverse
Interlock
Interlocks compressor 2 of the Pack
Controller when digitally low and issues
Warning [W219].
[141] Compressor 3
Inverse
Interlock
Interlocks compressor 3 of the Pack
Controller when digitally low and issues
Warning [W219]..
5-10 Terminal 18 Digital Input
Option:
Function:
[8]
*
Start Functions are described under parameter group 5-1*
5-11 Terminal 19 Digital Input
Option:
Function:
[10]
*
Reversing Functions are described under parameter group
5-1*
5-12 Terminal 27 Digital Input
Option:
Function:
[2]
*
Coast inverse Functions are described under parameter
group 5-1*
Parameter Description
VLT
®
Refrigeration Drive Programming Guide
62
MG16H102 - VLT
®
is a registered Danfoss trademark
3
3
