VYPER
™
VARIABLE SPEED DRIVE
INSTALLATION
100.200-IOM (SEP 13)
Page 21
THE “TRAP” FILTER
is standard on all Frick Vyper
™
units that
contain the
Harmonic Filter. The trap filter is composed of a
series of capacitors, inductors, and resistors. The trap filter
is used to reduce the effects of the PWM switching frequency
of the filter (20kHz) on the AC line.
CONFIGURATION:
The Frick Vyper
™
is internally cooled with a factory calibrated
liquid cooling circuit which offers many advantages over
traditional air-cooled systems. The liquid circuit provides
precisely controlled coolant temperatures to the heat gen-
erating components and delivers coolant into locations that
no air-over fan could penetrate. The Vyper
™
liquid-cooling
arrangement performs independently of fluctuating ambi
-
ent conditions. The NEMA 4 Indoor-rated cabinet seals the
internal electronics and piping from corrosive refrigerant
vapors while providing superior cooling for the internal
electronic components. Efficient liquid cooling also allows
for smaller cabinet size and longer component life than
traditional air-cooled units. Either plant condenser water
or a facility supplied Glycol loop subsequently removes the
heat in the coolant via the heat exchanger located at the
back of the cabinet.
VYPER
™
COOLING LOOP
While the compressor is running, the Quantum
™
LX control
panel monitors the temperature of Vyper
™
drive coolant. With
this information, the Quantum
™
LX delivers a 4-20 mA signal
to the 3-way mixing valve, based on the setpoints of a PID
loop output from the Quantum
™
LX. This signal will maintain
the Vyper
™
coolant temperature at the control setpoint for
the PID loop. This setpoint will be set at 110°F at the factory.
There are also low and high temp alarms and shutdowns as-
sociated with the Vyper
™
coolant temperature reading. These
wil also be factory set for a Low Temp. alarm and shutdown
at 85°F and 80°F with a 90 second delay, when running.
The High Temp. Alarm and shutdown will be factory set at
125°F and 130°F with a 30 second delay when running. If the
Vyper
™
coolant temperature drops too low, condensation
may occur, damaging vital electronic components.In addi-
tion to controlling the Vyper
™
cabinet cooling system, the
Quantum
™
LX panel also monitors four temperatures from the
Vyper
™
cabinet. If any of these temperatures rise too high,
the Quantum
™
LX panel will go to a Stop Load condition,
preventing either the slide valve position or motor speed
from increasing. If the temperature continues to rise, the
Quantum
™
LX panel will next go to a Force Unload condition.
In this situation, the slide valve will unload to lower the motor
torque required, in an effort to drop the temperature in the
panel. Below is a chart showing the Stop Load and Force
Unload temperatures as well as the temperatures where the
Vyper
™
cabinet will automatically shut down.
Location
Stop Start Force Unload Shutdown
Base plate Temp
Converter
160°F
165°F
175°F
Heat Sink Temp
155°F
160°F
170°F
Harmonic Filter
130°F
135°F
145°F
Base plate Temp
160°F
165°F
175°F
HP
Freq
A
B
C
D
E
F
G
H
J
K
L
M
N
254
50
51
42.5
4.25
47
51
5.5
17
36
70
22.5
20.4
16.4
2
305
60
51
42.5
4.25
47
51
5.5
17
36
70
22.5
20.4
16.4
2
362
50
58
49.5
4.25
54
58
5.5
19.1
41
75
24.6
22.5
18.5
2
437
60
58
49.5
4.25
54
58
5.5
19.1
41
75
24.6
22.5
18.5
2
Remote-mounted configuration is shown. Pack
-
age-mount dimensions are identical except for
the elimination of the stand. Coolant connections
to the Heat Exchanger are 1½ NPT.
notE: Considering all applicable codes regarding
spacing and clearance, be sure to provide adequate
space behind the drive for servicing the cooling
circuit (recommended 18” minimum).
VYPER
™
ConFIGURAtIons - liquid Cooled