PM9904BPD
ssaammeess
CONNECTOR DESCRIPTION
SETTING UP THE PM9904AP MODULE
Figure 3 below shows a typical setup for the PM9904BPD
evaluation module. The three phase voltages are connected
directly to SK1 and each corresponding phase current is wired
through the on-board CT’s. An external power supply can be
connected to SK3 should the PC’s parallel port not be able to
source enough current for the module's opto-couplers.
Jumper
Description
Connects the three phase 4 wire supply to the
module.
SK1
Female BD25pin connects the evaluation board to
the PC parallel port by a 1 to 1 cable. The module
is isolated from the PC by the opto-couplers.
SK2
5V supply to U7 opto coupler
Figure 3 also shows the default jumper settings. The
PM9904BPD evaluation module is setup by default for 3x
230V/80A operation. For 3x 115V operation jumpers J1, J2
and J3 need to be closed. Also capacitors C12, C13, and C14
values must be changed to 1uF / 150 VAC.
SK3
JP1
This header strip can be used for measuring the
I/O pins of the SA9904B and SA8807. Note that
this connector is on the same potential as the
SA9904B. Provision is made for VDD and VSS
so that a board with a micro controller can be
easily fitted without any additional wiring. Signals
available on this connector are:
When these hardware settings have been verified the user has
the choice of using the micro-controller board or a PC to
evaluate the SA9904B further.Please note when using the PC
the micro-controller board should be unplugged to prevent a
bus contention on the SPI bus, since the PC and micro-
controller would be attempting to drive the bus simultaneously.
Pin number Signal SA9904 (U1) SA8807 (U2)
1
2
3
4
5
6
7
8
VDD
VSS
F50
Pin 6
Pin 14
Pin 7
Pin 8
Pin 13
Pin 9
Pin 12
NC
Pin 13
Pin 26
NC
Micro-controller board
Once the board has been plugged into the evaluation module
no further action is required, just apply power.
SCK
CS
Pin 18
NC
MISO
MOSI
CE
Pin 20
Pin 19
Pin 21
PC
After removing the micro-controller board the evaluation board
can connected to the PC’s parallel port using a 1 to 1 parallel
cable (not supplied). Once the evaluation board has been
connected to the PC and powered up, the supplied software
can be launched. Refer to the next section for the software
installation and setup details.
MISO - Master In Slave Out
MOSI - Master Out Slave In
N
Load
PH1
PH2
PH3
SK1
5V
CT3
CT2
CT1
JP4
J3
J2
J1
Supp Sel
J7
J12
PB/F150
J6
JP1
GND
J5
J8
J9
VSS
To PC
Parallel port
J4
J10
J11
VDD
SK2
Figure 3: PM9904AP setup and connection
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