Wavelength Electronics WHY56ND, Datasheet And Operating Manual

Page: 14 / 26

© 2022 www.teamWavelength.com 14
WHY56ND TEMPERATURE CONTROLLER
OPERATION INSTRUCTIONS —
EVALUATION BOARD
WHY56ND WITH WHY56ND-EV EVAL BOARD
Operate the WHY56ND quickly using the WHY56ND‑EV.
See
page 17
for mounting instructions
NECESSARY EQUIPMENT
The equipment is the same as on page 8 with the
addition of the WHY56ND‑EV Evaluation Board and a Digital
multimeter, 4‑½ digit resolution recommended.
SYSTEM DESIGN DECISIONS
Before the WHY56ND 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 WHY56ND‑EV. 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 WHY56ND
and the WHY56ND-EV, it is critical that you verify that
the controller will be within the Safe Operating Area.
!
To ensure safe operation of the WHY56ND
Temperature 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 WHY56ND ON THE
WHY56ND-EV WITH HEATSINK AND FAN
• Match up the notch ( Figure 12 ) on the WHY56ND 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 WHY56ND. Make sure that
none of the pins were bent during insertion before
continuing.
• Attach the snap‑in standoffs ( Figure 15 ).
See Additional Technical Information on page 17 for
further details and an assembly diagram.
The WHY56ND‑EV is designed to handle currents as
high as ±2.0 A. Refer to the SOA calculator 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.
WHY56ND-EV 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 - Incr
CCW - Decr
(sec)
I TERM
PGND
VS VDD
OFF
ENABLE
ON
WAVELENGTH ELECTRONICS
For use with
WHY56ND
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
Notch
\\
Figure 12. WHY56ND-EV Evaluation Board Top View