JOHNSON CONTROLS
38
FORM 160.00-O4
ISSUE DATE: 07/31/2019
SECTION 4 - CYCLING SHUTDOWNS
MESSAGE DESCRIPTION
Harmonic Filter - 110 % Input
Current Overload
FLTR OVERLOAD FLT
The three phases of RMS lter current are measured by the output DCCTs’. This
information is sent to the harmonic lter logic board. If any one phase of lter cur-
rent exceeds a threshold for 40 seconds a shutdown will occur. Refer to the chart
below for the shutdown threshold value.
DRIVE HP RATING THRESHOLD SHUTDOWN VALUE
270, 292, 351 128 Amps
424 138 Amps
385, 419, 503 176 Amps
608 (575 VAC) 190 Amps
608 (400 VAC), 658, 704, 790 278 Amps
868, 882, 914, 917, 948, 1055 385 Amps
Harmonic Filter - DC Bus
Voltage Imbalance
FLTR BUS V IMBALANCE FLT
The DC link is ltered by many large capacitors. These capacitors are connected
in series to achieve a higher DC link voltage then can be supported by a signal
capacitor. It is important that the voltage is shared equally between the two sets of
series capacitors. Each set of capacitors must share approximately 1/2 of the total
DC link voltage. The harmonic lter logic board then measures the voltage of the 2
sets of the bus capacitors. If at anytime while the harmonic lter is running that the
difference in the voltage between the 2 sets of capacitors is greater than 50 VDC
(for 380 through 460 VAC input voltage) 65 VDC (for 575 VAC input voltage), then
a shutdown will occur.
Harmonic Filter - DC Current
Transformer 1 (or 2)
FILTER DCCT 1 (OR 2)
ERROR
During initialization, with no current owing through the Direct Current Current
Transducers (DCCTs), the DCCT’s output voltages are measured and compared
with a preset limit in the harmonic lter logic board. If the measured values exceed
the preset limits, the DCCTs are presumed to be bad and this shutdown will be
generated.
Harmonic Filter - High DC
Bus Voltage
FLTR BUS OVER-VOLTAGE FLT
The harmonic lter logic board continuously monitors the harmonic lter DC link
voltage if the level of the DC link voltage exceeds a range of 822 to 900 VDC (for
380 through 460 VAC input voltage) or 999 to 1099 VDC (for 575 VAC input volt-
age) this shutdown is initiated. Keep in mind that the harmonic lter has its own
DC Link as part of the harmonic lter power unit. The harmonic lter DC Link is not
connected in any way with the drive’s DC Link.
Harmonic Filter - High Phase
A (or B, C) Current
FLTR PHASE A (B, C)
OVERCURRENT
The output current of the harmonic lter is read by the Direct Current-Current
Transducer (DCCT). This current information is sent to the harmonic lter logic
board where it is compared against a threshold. If the output current of the har-
monic lter power unit is greater than the threshold, then the harmonic lter will turn
off for 5-6 line cycles. After that time the lter operation will resume. If the harmonic
lter operation is stopped 3 times within a period of 60 line cycles, then the lter
and VSD power units are shut down and this message is generated.
DRIVE HP RATING THRESHOLD SHUTDOWN VALUE
270, 292, 351, 424 378 Amps Peak
385, 419, 503, 608 (575 VAC) 523 Amps Peak
608 (400 VAC), 658, 704, 790 781 Amps Peak
868, 882, 914, 917, 948, 1055 1225 Amps Peak
TABLE 4 - CYCLING SHUTDOWN MESSAGE (CONT'D)
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