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Electrical Maintenance
86
SMART REEFER 4 (SR-4)
Microprocessor Controller
Refer to the SR-4 Microprocessor Control System
Diagnostic Manual TK 55533 for complete
service information about the Microprocessor
Controller and the related components.
IMPORTANT: A ServiceWatch download can be
helpful when diagnosing a problem in a unit
with an SR-4 Controller. Therefore, it is
recommended that a ServiceWatch download be
preformed to help diagnose a problem. A
ServiceWatch download must be preformed
before contacting the Thermo King Service
Department for assistance in diagnosing a
problem. Refer to the SR-4 Microprocessor
Control System Diagnostic Manual TK 55533
for information about downloading the
ServiceWatch Data Logger and viewing the data.
REB (Radio Expansion Board)
Option
The REB (Radio Expansion Board) option is a
wireless communication platform that offers fleet
owners the ability to monitor their refrigerated
trailers. Cellular, GPS, and Wi-Fi capabilities
communicate with Thermo King’s web-based
TracKing application. A third party interface
(using iBox protocol) offers a gateway for
telematics providers to communicate with the
Thermo King unit.
Currently, REBs with the following capabilities
are available. Some combinations of these
capabilities are also available.
•
REB with Cellular and GPS capabilities for
use with the TracKing application.
•
REB with Wi-Fi and GPS capabilities for use
with the TracKing application.
•
REB with iBox protocol for use with third
party telematics systems.
NOTE: REBs that have iBox and Cellular
capabilities can be configured to either use the
iBox protocol, or communicate with TracKing.
They cannot be configured to do both.
The REB is a “daughter board” that mounts on the
base controller as shown in Figure 154. The REB
communicates with the base controller through
the CAN connector J98 on the base controller.
Refer to the Radio Expansion Board (REB)
Diagnostic Manual TK 55065 for complete
service information about the REB.
REBs with cellular capabilities also have a battery
mounted near the control box. The REB battery is
used to provide back-up power for at least 24
hours if the main battery power is lost or
interrupted. The REB only transmits its location
during this back-up mode. The REB contains an
intelligent battery charger that keeps the REB
battery charged during normal unit operation.
1.
REB Fuse (3 Amp)
2.
REB (Radio Expansion Board)
Figure 154: REB Mounted on Base Controller
K11
F5 – 60A
7D
8DP
FA DMP
8D
8S
8D
F3 - 40A
F
12
- 5
A
F
8 - 5
A
F
7 - 2A
F
1
3 - 2
A
F
1 - 5
A
F25 – 7.5A
F22 - 10A
F2 - 15A
F6 - 15A
F20 - 2A
F15 - 2A
K1
K2
2AH
H
CH
2
A
2
K3
K9
K7
K10
K8
K6
J32
J34
J33
J12
J13
J9
J10
J8
J6
1
2
1
2
3
1
3
3
5
2
4
J1
1
2
1
2
3
1
3
3
5
2
4
J3
12
1
23
13
35
24
J4
J27
1
1
1
1
1
1
1
1
1
J102
J101
J29
J11
F4
LED45
2
9
3
5
R
e
v
H
W
a
tl
o
w
R
o
H
S
J21
LED09
LED48
LED44
LED05
LED04
LED07
LED08
LED
02
LED01
LED27
LED29
LED30
LED32
LED24
LED25
LED26
LED39
LED40
LED41
LED42
LED06
LED43
LED50
LED47
LED46
LED49
LED35
LED36
LED37
LED38
LED23
STATUS
LED11
LED12
LED13
LED10
LED16
LED17
LED14
1
J98
F
10 - 15
A
A4
A1
A2
A3
3A
RJ6
RJ2
RJ5
SIM
Card
Holder
USB
Port
GPRS
LED
iBox
LED
WiFi
LED
ARA1995
1
2