Blender Control Board - Welbilt Multiplex FreshBlender Service Manual

Section 7

BLENDER CONTROL BOARD

Location
Each blend chamber has a dedicated Blender Control Board.
The Blend Chamber Assembly needs to be separated from
the frame in order to access the blender control board.
Function
The Blender Control Board provides control of the blender
position, up/down movement of the linear slide, and on/
off motor operation. The Blender Control Board is software-
driven and retains firmware which can be updated via the
USB port, near the power switch on the left side of the unit.
Specifications
The Blender Control Board receives 230 VAC line voltage
and 24 VDC low voltage. The blender board executes the
blend profile of the customer's recipe when a drink is
selected. The board will distribute voltage to the blender
motor, linear slide, or the rinse water solenoid as instructed
according to the current firmware and instruction from
the UI. Instruction from the UI is transmitted via Modbus
communication cable connected at J4. The blender also
receives input from the blender door reed switch and the
blender home position switch.
Check Procedure
The Blender Control Board function can be tested via
the "Outputs" in the UI service screen. (Managers Menu>
Service> OUTPUTS). Operate the blender blade to verify
blade operation and/or the blender slide to verify linear
slide operation.
To test the motor blade it's best to place a cup of water in
the blend chamber to be tested, activate the blender slide
on the side to be tested, and then activate the blender
blade. This will allow for a better visual of the blade turning.
NOTE: The blender blade will only operate for 3 seconds at
half voltage in this test function.
The blender door must be fully closed to allow blender
operation. The door position can be confirmed using
the "Inputs" screen - Managers Menu> Service> INPUTS.
This will verify the software is correctly reading the door
position. Open the perspective door (left / right) and the
Input should report the current condition, "open" or "closed".
Part Number REV00 04/08/2020
Blender Board connections:
• J5 (N) / J6 (L1) - 230 VAC
• J2 (N) / J7 (L1) - 230 VAC
(Present with relay closed)
• J12 - Rinse Water Solenoid Valve, 24 VDC
• J4 - Modbus communication
• J9 - Reed Switch / 3 wire
• Brown to White - NC
• Green to White - NO
• J13 - Home position switch - NO
• J10 - Linear Slide Stepper Motor
• J1 - 24 VDC input (T1 +24 VDC / T2 -24 VDC)
• Onboard fuse - protects blender motor output
circuit, 2.5 amp.
• DIP switch settings - All in the "OFF" position
identifies the left side board, #1 switch in the
"ON" position and #2, 3 & 4 in the "OFF" position
identifies the right side board.
• Has one LED:
- Constant when first powered on.
- Blinks when linear slide reaches home.
- Heartbeat after homing is accomplished.
+ 24 VDC
- Input
2.5 Amp
Fuse
AC Power AC Power to
From SRB Mixer Motor
Component Check Procedures
DIP Switches
Home Position
Microswitch
Door Safety
Reed Switch
Communication
Cable to SRB
Speed Control
24 VDC Rinse
Solenoid
67