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Figure 8-1 Diagnostics logic diagram
Analog inputs
Analog input 1 (%)
94
T2
Analog input 2 (%)
95
T4
Digital I/O
T6
Digital I/O
Read
T5
word
Pr 90
B3
B4
XX
B5
B6
B7
Digital I/O read word Pr 90
Terminal Binary value for XX
B3
1
B4
2
B5
4
B6
8
B7
16
T6/T5
64
Key
Input
B4
XX
terminals
Output
XX
B3
terminals
Cooling fan control (size B, C and D only)
As default, the drive's cooling fan is controlled by the drive. The fan will remain off until
the heatsink temperature reaches 60°C or the output current rises above 75% of the
drive rating. The fan will then switch on and run at full speed for a minimum of 20s.
The cooling fan on a Commander SK size D is a dual speed fan. The drive controls the
speed at which the fan runs based on the temperature of the drives heatsink and also
the drive's thermal model system.
For further details, see the Commander SK Advanced User Guide.
Commander SK Getting Started Guide
Issue Number: 9
Frequency
reference
selected (Hz)
81
0
1
Jog
reference
15
Jog
selected
Sequencer
93
Start/stop
logic select
Reverse
11
selected
Brake
controller
92
enabled
12
Reference
Stop mode
enabled
select
31
91
Read-write (RW)
parameter
Read-only (RO)
parameter
www.controltechniques.com
Speed clamps
Minimum
01
speed
Maximum
02
speed
1
X-1
1
0
0
0Hz
DC bus
voltage
84
Motor active
Current
current
measurement
89
Motor current
88
Ramps
Acceleration
03
rate
Deceleration
04
rate
Ramp mode
30
select
Pre-ramp
reference (Hz)
82
Post-ramp
83
reference
(Hz)
frequency
Motor control
Motor rated
06
current
Motor rated
07
speed
Motor rated
08
voltage
Motor power
09
voltage
factor
Dynamic V to f
32
select
Switching
37
frequency
38
Autotune
Motor rated
39
frequency
No. of motor
40
poles
Voltage
41
mode select
Voltage
42
boost
Parameter
access
10
Motor
85
Motor
86
Motor
speed
rpm
87
49
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