Perma Pure Baldwin-Series MP5400 - Manual (Page 10)

Section G: Boards 11
G: B
OARDS
Control Board
The control board is the motherboard for the eCOOL™ system. The control board
handles the majority of the functions for the cooler module. It contains the
microprocessor that controls all of the functional areas of the design, as well as the
temperature measurement of the controlled vapor flow as well as the Pulse Width
Modulation (PWM) control of the peltier modules to cool the vapor.
Inputs:
4 Thermocouple Inputs (Channel 1, Channel 2, and two Spare)
12-24VDC Power Inputs
12-24VDC Control Board Power Inputs
1 Analog Input
Input/Outputs:
Relay Board 1 Input/Output
Relay Board 2 Input/Output
Outputs:
4 Analog Outputs (scaled 0 to 4.5VDC matching the Thermocouple Inputs)
Peltier Power Outputs (spade terminals)
DC Fan Power Output 1
DC Fan Power Output 2
Power Connections
The board is powered in two locations by a DC power supply rated to handle the
current required by the peltiers present in the system. The thermo-electric element
(Peltier) power is supplied via the E1 and E2 lugs, where E2 is connected to the
positive terminal and E1 is connected to ground. The rest of the board is powered
by the JP1 power connector. This connector has two terminals on it with number 1
connected to the positive DC voltage coming from the power supply and number 2
connected to ground. The wires that are used to connect to the power supply should
be individually routed back to the power supply to minimize the noise created by the
peltiers.
Fuses
The fuses are labeled as F1, F2, F3. They are self-resetting fuses. If one of the
fuses trips, disconnect all power, identify and correct the problem that caused the
high current draw, and reconnect power. It could take up to 5 minutes for a fuse to
self-reset in a power off state.