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Unidrive SP Advanced User Guide
153
Issue Number: 10 www.controltechniques.com
Table 5-4 Power stage temperature 1 (Pr 7.04) in
°
C
Additional monitoring is used with drives sizes SP6xxx and SPMxxxx to detect failure of the power stage cooling fan. If this fan fails the monitoring
point used to derive power stage temperature 1 that is nearest the fan will rise temperature above it s normal level, but not above the trip temperature
for power stage. This is detected and can initiate an Oht2 trip. The trip thresholds are show below.
Table 5-5 Power stack temperature 2 (Pr 7.05) in
°
C
Table 5-6 Power stack temperature 3 (Pr 7.36) in
°
C
The control board temperature is also monitored and displayed in Pr
7.06
. If the temperature displayed exceeds 92
°
C an O.Ctl trip is initiated, and this
trip can only be reset if the temperature falls below 87
°
C . If the temperature exceeds 85
°
C a "hot" alarm is displayed. If the temperature is outside
the range from -20
°
C to 150
°
C it is assumed that the monitoring thermistor has failed and an HF29 hardware fault trip is initiated.
Drive cooling fan
The drive cooling fan is controlled by the temperature from monitoring points and other actions as follows:
1. If Pr
6.45
= 1 the fan is at full speed for at least 10s.
2. If a Solutions Module indicates that it is too hot the fan is at full speed for at least 10s.
3. For drive sizes SP1xxx to SP2xxx the fan is at full speed if the drive is enabled and the highest power circuit temperature (Pr
7.04
or Pr
7.05
) or
the temperature calculated for the case of the IGBT package exceed the threshold for the drive. The fan is at its low speed if this temperature falls
5
°
C below the threshold or the drive is disabled and the temperature is below the alarm level for Pr
7.04
and Pr
7.05
.
4. For drive sizes SP3xxx to SPMAxxxx or SPMDxxx the fan speed is controlled above its minimum level if the drive is enabled and the highest
power circuit temperature (Pr
7.04
, Pr
7.05
or Pr
7.36
) or the temperature calculated for the case of the IGBT package exceed the lower threshold
for the drive. The maximum fan speed is reached when the highest of these temperatures exceeds the upper threshold. The fan is at its minimum
speed if the drive is disabled and the temperature is below the alarm level for Pr
7.04
, Pr
7.05
and Pr
7.36
.
5. For drive size SP0xxx the fan is always on when the drive or the braking IGBT are enabled and remains on for 10s after the drive or braking IGBT
is disabled.
Drive size Trip temperature Trip reset temperature
Alarm temperature
SP0xxx
77
72
75
SP1xxx
110
105
100
SP2xxx
115
110
100
SP3xxx
120
115
100
SP4xxx
72
67
68
SP5xxx
72
67
68
SP6xxx
92
87
85
SPMAxxxx
92
87
85
SPMDxxxx
96
91
88
Drive size
Trip temperature
SP6xxx
67
SPMAxxxx
67
SPMDxxxx
71
Drive size
Trip temperature Trip reset temperature
Alarm temperature
SP0xxx
83
78
80
SP1xxx
92
87
85
SP2xxx
100
95
95
SP3xxx
98
93
94
SP4xxx
78
73
72
SP5xxx
78
73
72
SP6xxx
78
73
72
SPMAxxxx
78
73
72
SPMDxxxx
78
73
72
Drive size
Trip temperature Trip reset temperature
Alarm temperature
SP0xxx
105
100
100
SP1xxx
N/A
N/A
N/A
SP2xxx
N/A
N/A
N/A
SP3xxx
N/A
N/A
N/A
SP4xxx
N/A
N/A
N/A
SP5xxx
N/A
N/A
N/A
SP6xxx
85
80
80
SPMAxxxx
85
80
80
SPMDxxxx
N/A
N/A
N/A
Summary of Contents for unidrive sp
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