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© 2011 Emerson Climate Technologies
Printed in the U.S.A.
AE8-1385
Application Engineering
BULLETIN
ALERT
TRIP / LOCK
POWER
1 Long Run Time
2 Compressor (Pressure) Trip
3 Pressure Switch Cycling
4 Locked Rotor
5 Compressor (Mod Run) Trip
6 Open Start Circuit
7 Open Run Circuit
8 Welded Contactor
9 Low Voltage
DC SOL operating range: 18-28VDC
Compressor second stage is
energized when Y & Y2 are 24VAC
PROT breaks 24VAC common
leg of compressor contactor coil
Reset codes and PROT lockout
by removing 24VAC to module
Flash Event
Two Stage Control
Active Protection
C
S
R
47
37
62
112
67
Figure 2 – Module Dimensions in Millimeters
Y2
Y
Data Port
L
R
C
PROT
Solenoid
For Use With
Copeland Scroll
UltraTech
Compressors
P/N: 543-XXXX-XX
065312345
Patent: 6,615,594
Use With Class 2
Circuits Only
Supply 24VAC
50/60Hz
Power 1.5VA
Figure 3 – Terminal Locations