Vsd - High Phase (X) Inverter Baseplate Temperature (385, 419, 503 And 608 Hp Drives); Vsd - High Phase (X) Inverter Baseplate Temperature (658, 704 And 900 Hp Drives); Vsd - Precharge Lockout; Harmonic Filter - High Baseplate Temperature - York VSD 270 Operation Manual

TABLE 3 - SAFETY SHUTDOWNS (CONT'D)
MESSAGE
VSD - High Phase (X) Inverter
Baseplate Temperature (385,
419, 503 and 608 Hp drives)
HIGH PHASE (X) BASEPLATE
TEMPERATURE FAULT
VSD - High Phase (X) Inverter
Baseplate Temperature (658,
704 and 900 Hp drives)
HIGH PHASE (X) BASEPLATE
TEMPERATURE FAULT

VSD - Precharge Lockout

PRE-CHARGE FAULT LOCKOUT
Harmonic Filter - High
Baseplate Temperature
HIGH FILTER BASEPLATE
TEMPERATURE FAULT
Harmonic Filter - High Total
Demand Distortion
FLTR HIGH TDD FLT
JOHNSON CONTROLS
The X will indicate
the phase that the
high temperature
has occurred.
The X will indicate
the phase that the
high temperature
has occurred.
If the OSCD fails to meet the pre-charge criteria (refer to pre-charge faults), the
pre-charge circuit will wait for a period of 10 seconds before another pre-charge
attempt. The unit's cooling fans and coolant pump shall remain energized during
this time period. Following this 10-second period, the pre-charge shall again be
initiated. The unit shall attempt to meet the pre-charge criteria three consecutive
times before the OCSD will shutdown, lockout, and display this message.
A thermistor sensor is located inside the transistor module on the harmonic filter
power unit. If at anytime this thermistor detects a temperature higher then the
threshold value a shutdown will occur. Refer to the chart below for the shutdown
threshold values. A manual reset is required by pressing the "Overtemp Reset"
pushbutton located on the Filter Logic board.
DRIVE HP RATING
270/292/351
385/419/424/503/608
658/704
The control center determines this shutdown by using data supplied from the
harmonic filter logic board. This shutdown indicates that the filter is not operating
correctly or the input current to the OSCD/filter system is not sinusoidal. This shut-
down will occur if the Total Demand Distortion (TDD) in any one phase exceeds
25% continuously for 45 seconds. TDD is an acronym for Total Demand Distortion,
a term defined by the IEEE Std 519-1992 standard as "the total root - sum - square
harmonic current distortion, in percent of the maximum demand load current (15
or 30 min demand)". The harmonic filter option was designed to provide an input
current TDD level of 8% or less for the OSCD system. A standard OSCD less the
optional filter typically has an input current TDD level on the order of 28 - 30%.
ISSUE DATE: 12/19/2017
DESCRIPTION
A thermistor sensor is located inside the
transistor module on the OSCD power unit.
If at anytime this thermistor detects a
temperature of 175°F (79°C) or higher a
shutdown will occur. The cooling fans and
coolant pump on the OSCD will continue to
run after the shutdown until the thermistor
temperature has dropped below 165°F
(74°C). This shutdown requires a manual
reset via the Reset push-button on the
OSCD logic board.
A thermistor sensor is located inside the
transistor module on the OSCD power unit.
If at anytime this thermistor detects a
temperature of 196°F (91.1°C) or higher a
shutdown will occur. The cooling fans and
coolant pump on the OSCD will continue to
run after the shutdown until the thermistor
temperature has dropped below 165°F
(74°C). This shutdown requires a manual
reset via the Reset push-button on the
OSCD logic board.
THRESHOLD SHUTDOWN VALUE
175° F (79° C)
190° F (88° C)
194° F (90° C)
FORM 160.00-O4
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