Danfoss VLT Refrigeration Drive FC 103 Programming Manual page 70

Parameter Description
The below setting options are all related to the pack
controller. Wiring diagrams and settings for parameter, see
parameter group 25-** Pack Controller for more details.
[120] Lead
3 3
Compressor
Start
[121] Lead
Compressor
Alternation
[130 Compressor
- 1 Interlock -
132] Compressor
3 Interlock
[139] Compressor
1 Inverse
Interlock
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®
VLT Refrigeration Drive FC 103
Starts or stops the lead compressor
controlled by the frequency converter. A
start requires that a system start signal is
applied, for example to 1 of the digital
inputs set for [8] Start.
Forces alternation of the lead compressor in
a pack controller. Set parameter 25-50 Lead
Pump Alternation to either [2] At Command
or [3] At Staging or At Command. Set
parameter 25-51 Alternation Event to any
option.
Set parameter 25-90 Compressor Interlock to
[1] On. The option depends on the setting
in parameter 25-06 Number of Compressors.
If this option is set to [0] No, compressor 1
refers to the compressor controlled by relay
1, and so on. If this option is set to [1] Yes,
compressor 1 refers to the compressor
controlled by the frequency converter only
(without any of the built-in relays involved)
and compressor 2 refers to the compressor
controlled by relay 1. Variable speed
compressor (lead) cannot be interlocked.
Setting in Setting in
parameter parameter 25-06 Number of
group 5-1* Compressors
Digital Inputs
[0] No
[130] Controlled Controlled
Compressor 1 by relay 1
Interlock (only if not frequency
lead converter
compressor) (cannot be
interlocked)
[131] Controlled Controlled
Compressor2 by relay 2 by relay 1
Interlock
[132] Controlled Controlled
Compressor3 by relay 3 by relay 2
Interlock
Table 3.10 Compressor 1 Interlock -
Compressor 3 Interlock
Interlocks compressor 1 from the pack
controller when the signal is low and issues
warning 219, Compressor Interlock. When
inversely interlocked, compressor 1 (the
lead compressor) is staged according to
parameter 25-23 Fixed Speed neutral Zone
[unit].
Danfoss A/S © 05/2016 All rights reserved.
[140] Compressor
2 Inverse
Interlock
[141] Compressor
3 Inverse
Interlock
5-10 Terminal 18 Digital Input
The parameter contains all options and functions listed in
parameter group 5-1* Digital Inputs.
5-11 Terminal 19 Digital Input
The parameter contains all options and functions listed in
parameter group 5-1* Digital Inputs.
5-12 Terminal 27 Digital Input
The parameter contains all options and functions listed in
parameter group 5-1* Digital Inputs.
5-13 Terminal 29 Digital Input
The parameter contains all options and functions listed in
parameter group 5-1* Digital Inputs. This parameter also contains
options [60] Counter A (up), [61] Counter A (down), [63] Counter B
(up), and [64] Counter B (down) for smart logic control.
5-14 Terminal 32 Digital Input
The parameter contains all options and functions listed in
parameter group 5-1* Digital Inputs. This parameter also contains
options [60] Counter A (up), [61] Counter A (down), [63] Counter B
(up), and [64] Counter B (down) for smart logic control.
5-15 Terminal 33 Digital Input
The parameter contains all options and functions listed in
[1] Yes
parameter group 5-1* Digital Inputs. This parameter also contains
options [60] Counter A (up), [61] Counter A (down), [63] Counter B
by the
(up), and [64] Counter B (down) for smart logic control.
5-16 Terminal X30/2 Digital Input
This parameter is active when VLT
is installed in the frequency converter. The parameter contains all
options and functions listed in parameter group 5-1* Digital
Inputs.
5-17 Terminal X30/3 Digital Input
This parameter is active when VLT
is installed in the frequency converter. The parameter contains all
options and functions listed in parameter group 5-1* Digital
Inputs.
5-18 Terminal X30/4 Digital Input
This parameter is active when VLT
is installed in the frequency converter. The parameter contains all
options and functions listed in parameter group 5-1* Digital
Inputs.
Interlocks compressor 2 from the pack
controller when the signal is low and issues
warning 219, Compressor Interlock.
Interlocks compressor 3 from the pack
controller when the signal is low and issues
warning 219, Compressor Interlock.
®
General Purpose I/O MCB 101
®
General Purpose I/O MCB 101
®
General Purpose I/O MCB 101
MG16H202