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Section 2 – SR-2 Hardware Description
INTERFACE BOARD
The interface board provides the interface between
the microprocessor and the unit components such
as solenoids valves, and motor contactors. It also
provides overcurrent and short circuit protection for
the controls and components.
The microprocessor controls the operation of the
unit through the control relays and Smart FETs on
the interface board. The relays control power to the
high amperage loads. The Smart FETs control
power to the lower amperage loads. Each relay is
individually fuse protected. The Smart FETs are
self-protecting An LED next to each relay or Smart
FET is illuminated when the relay or FET is
energized by the microprocessor. With relays the
LED lights only when the relay coil is energized and
the relay contacts have transferred to the energized
position.
The interface board is plugged directly into the
microprocessor and secured with mounting
hardware. The main components on the interface
board are the control relays, fuses, LEDs to indicate
relay or output states, preheat buzzer, jumpers,
current shunt, smart FETs, and the wiring harness
connectors. The only user serviceable components
on the interface board are the fuses and jumpers.
K5
K8
15A
10
A
15A
1A
K6
K7
K2
CH
J7
1
CAN 3
F1
F10
F2
F3
F6
ON/OFF
SWITCH
LED22
J4
2A
F7
3A
F9
3A
F12
3A
F8
CAN 2
CAN 1
J103
RS232-2
J102
J101
J27
10A
F11
K4
K3
H
2A
2
60A
F5
40A
8D
8DP
8S
8
DG
7D
29
LED17
LED18
LED20
LED19
LED8
LED9
LED10
LED11
LED24
LED25
LED5
LED4
LED7
K9
K1
LED23
LE
D
6
LED3
RE
M
O
TE L
IG
H
T
EL
ECTRIC
J8
J6
J14
J13
J12
J9
J10
J15
GM1
F4
2A
F20
F13
F15
RS232-1
GM
2
J24
J25
J3
J26
J23
2A
F12
LED21
LED26
SR2 Interface Board
2-11
31 January 2005
Summary of Contents for SR-2 SmartReefer2
Page 4: ......
Page 7: ...Tab goes here and the next page should be GREEN Section 1 Safety...
Page 8: ......
Page 10: ...Section 1 SR 2 Safety Information 1 2 18 January 2005...
Page 14: ...Section 1 SR 2 Safety Information 1 6 18 January 2005...
Page 15: ...Tab goes here and the next page should be GREEN Section 2 Hardware Description...
Page 16: ......
Page 48: ...Section 2 SR 2 Hardware Description 2 32 31 January 2005...
Page 49: ...Tab goes here and the next 2 pages should be GREEN Section 3 Software Description...
Page 50: ......
Page 96: ...Section 3 SR 2 Software Description 3 46 31 January 2005...
Page 97: ...Tab goes here and the next page should be GREEN Section 4 Operation...
Page 98: ......
Page 181: ...Tab goes here and the next 2 pages should be GREEN Section 5 Diagnostics...
Page 182: ......
Page 266: ...Section 5 SR 2 Diagnostics 5 84 02 February 2005...
Page 267: ...Tab goes here and the next page should be GREEN Section 6 Service Procedures...
Page 268: ......
Page 270: ...Section 6 SR 2 Service Procedure Index Page 2 01 February 2005...
Page 282: ...Section 6 SR 2 Service Procedure A01B Page 6 P41RA01B 31 January 2005...
Page 298: ...Section 6 SR 2 Service Procedure A02A Page 12 P41RA02A 02 February 2005...
Page 318: ...Section 6 SR 2 Service Procedure A03B Page 4 P41RA03B 30 January 2005...
Page 338: ...Section 6 SR 2 Service Procedure A15A Page 4 P41RA15A 30 January 2005...
Page 360: ...Section 6 SR 2 Service Procedure A46B Page 8 P41RA46B 30 January 2005...
Page 366: ...Section 6 SR 2 Service Procedure A48A Page 6 P41RA48A 30 January 2005...
Page 376: ...Section 6 SR 2 Service Procedure A50A Page 6 P41RA50A 31 January 2005...
Page 394: ...Section 6 SR 2 Service Procedure F08A Page 4 P41RF08A 30 January 2005...
Page 398: ...Section 6 SR 2 Service Procedure F09A Page 4 P41RF09A 30 January 2005...
Page 402: ...Section 6 SR 2 Service Procedure G03A Page 4 P41RG03A 31 January 2005...
Page 406: ...Section 6 SR 2 Service Procedure H04A Page 4 P41RH04A 30 January 2005...
Page 407: ...Tab goes here and the next page should be GREEN Section 7 Service Information...
Page 408: ......
Page 410: ...Section 7 SR 2 Information 7 2 02 February 2005...
Page 419: ...Tab goes here and the next page should be GREEN Section 8 Schematics and Wiring Diagrams...
Page 420: ......
Page 422: ...Section 8 SR 2 Drawings 8 2 01 February 2005...
Page 424: ...Section 8 SR 2 Drawings 8 4 01 February 2005...
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