Page 16
PPS Installation and Operating Manual
Rev. C.2 (January 19, 2018)
J1 Connector
Name
Description
Type
Pin #
BATT DIST EN
Closes the Main Battery Distribution
contactor
Open/GND
Input
1
RSVD
Reserved (do not connect)
2
MAIN BATT START
EN
Closes the Main Battery Start contactor
BUS/Open
Input
3
RSVD
Reserved (do not connect)
4
RSVD
Reserved (do not connect)
5
MASTER
ALTERNATE
Turn on PPS (Alternate - redundant to
MASTER pin 7)
Open/GND
Input
6
MASTER
Turn on PPS (Redundant with pin 6)
Open/GND
Input
7
ALT DIST EN
Closes the Alternator Distribution contactor
Open/GND
Input
8
BATT
Main Battery current sense 1 mV/A relative
to 7.5 V
Analog
9
STARTER ACTIVE
Starter Active indication
BUS/GND
Output
10
RSVD
Reserved (do not connect)
11
RSVD
Reserved (do not connect)
12
ALT DIST FAULT
Latched Over-current fault indication
BUS/GND
Output
13
BATT DIST FAULT
Latched Over-current fault indication
BUS/GND
Output
14
RSVD
Reserved (do not connect)
15
RSVD
Reserved (do not connect)
16
RSVD
Reserved (do not connect)
17
ALT CURRENT-
Main Battery current sense 7.5 V reference
Analog
18
ALT
Main Battery current sense 1 mV/A relative
to 7.5 V
Analog
19
BATT CURRENT-
Main Battery current sense 7.5 V reference
Analog
20
RSVD
Reserved (do not connect)
21
RSVD
Reserved (do not connect)
22
RSVD
Reserved (do not connect)
23
RSVD
Reserved (do not connect)
24
RSVD
Reserved (do not connect)
25
GND
Ground (must connect both pins 26 and 27
to GND - maximum wire length: 24 inches)
26
27
RSVD
Reserved (do not connect)
28
4.3 Ground Test
The ground test steps are performed in two parts: the first part without
the engine running and the second part with the engine running.
4.3a Ground Test without engine running
Perform the following steps without the engine running. Prevent engine
from starting during cranking by shutting off fuel and/or having mag
switches in the off position. The battery will drain during testing, so have
either a charger or ground power available.
•
Turn on the master switch
•
If installed, turn on the main battery enable switch
•
Verify main bus power
•
Use a multi-meter or verify load device is operational
•
If installed, verify the main bus current output.
•
Verify starter cranking
•
Turn the starter switch to the on position for a few seconds
•
Verify the starter indicator if used.
•
When installing with a VP-X, perform VP-X ground testing
without engine running at this time.
4.3b Start Mode Duty Cycle
The PPS was designed to be more tolerant to overheating than most
starters, but measures should still be taken to limit heat build up in
the PPS. First and most important is to always follow your starter
manufacturer’s published duty cycle guidelines. In most cases, this will
be adequate to prevent heat damage to the PPS.
For reference, here are the start mode duty cycle guidelines for the PPS:
•
Each starting attempt must not exceed 20-seconds.
•
After each starting attempt, there must be a 60-second rest time.
•
After three (3) starting attempts, a 10-minute cool down period is
required.
