© 2023
14
WHY5640 TEMPERATURE CONTROLLER
OPERATION INSTRUCTIONS —
EVALUATION BOARD
WHY5640 WITH WHY5690 EVAL BOARD
Operate the WHY5640 quickly using the WHY5690.
See
NECESSARY EQUIPMENT
The equipment is the same as on
addition of the WHY5690 Evaluation Board and a Digital
multimeter, 4-½ digit resolution recommended.
SYSTEM DESIGN DECISIONS
Before the WHY5640 can be configured, several decisions
must be made:
•
NTC thermistor or RTD sensor?
•
What is the operating maximum current and maximum
voltage?
•
Will the system, as designed, fit within the Safe
Operating Area (SOA)?
Follow the next nine steps sequentially to safely operate
the WHY5690. Complete steps 1 through 4 before applying
power to the board. For online Safe Operating Area
Calculations (SOA) see:
https://www.teamwavelength.com/
support/design-tools/soa-tc-calculator/
.
Before proceeding with configuration of the WHY5640
and the WHY5690, it is critical that you verify that the
controller will be within the Safe Operating Area.
!
To ensure safe operation of the WHY5640
Thermoelectric Controller, it is imperative
that you determine that the unit will be
operating within the internal heat dissipation
Safe Operating Area (SOA).
STEP 1
INSTALL WHY5640 ON THE
WHY5690 WITH HEATSINK AND FAN
• Match up the notch (
) on the WHY5640 with
the silkscreen on the PCB
•
Align the pins with the sockets, ensuring that all pins are
lined up in their respective sockets.
•
Press firmly to seat the WHY5640.
Make sure that
none of the pins were bent during insertion before
continuing.
•
Attach the snap-in standoffs (
).
See
Additional Technical Information on page 17
for
further details and an assembly diagram.
The WHY5690 is designed to handle currents as high as
±2.0 A. Refer to the
to determine proper
thermal solution and operation for your application. WEV300,
WEV301, and WEV302 Thermal Solutions Kits include:
heatsink, thermal washer, fan (not included in WEV300),
and screw fasteners.
WHY5690 EVAL
CW-2 AMPS
CCW-0 AMPS
OUTPUT B
LIM A
FAN
(+)
(-)
COM
VM2
VM1
CW-2 AMPS
CCW-0 AMPS
LIM B
OUTPUT A
SENSOR-
RUN
RSET
CW - Decr
CCW - Incr
(sec)
I TERM
PGND
VS
VDD
OFF
ENABLE
ON
WAVELENGTH
ELECTRONICS
For use with
WHY5640
CW - Decr
CCW - Incr
P GAIN
SET
Output
Enable/Disable
Proportional
Gain Trimpot
Integrator Time
Constant Trimpot
Setpoint Test
Points
Setpoint
Trimpot
Setpoint
Run/Set
Switch
Fan
Connections
Current
Limit A
Trimpot
Current
Limit B
Trimpot
CW - Incr
CCW - Decr
Notch
\\
Figure 12. WHY5690 Evaluation Board Top View
