396-4519Y1 Sentinel NH3 Blockage Monitor
8
Revised 01/26/2022
© 2016-2022 SurePoint Ag Systems Inc.
The SurePoint Temperature Interface module communicates with the Sentinel ECU
through a proprietary communication network (CAN). The Sentinel ECU then, using the
ISOBUS communication protocol, relays information through the tractor ISOBUS and
generates the user interface on the in-cab display. A series of connections are required
to form this communication network.
SurePoint Harness Layout for Sentinel NH3
Tractor Connection
Designed to integrate with any imple-
ment, in some cases, connecting the
Sentinel starts at the tractor’s ISOBUS
connection. Power and information is
relayed to the Sentinel ECU using a
SurePoint Front ISO Extension which
includes power and CAN bus connec-
tions. Already using the tractor ISOBUS?
No Problem. SurePoint carries ISOBUS-
Y harnesses to split the ISO connection
at the tractor.
Service Connections
The Terminating Resistor, Programming
and RS232 connectors are for service
only and should not be used.
Bus Connections
Two Flowmeter Bus connections are provided for use in
several applications. For standard Sentinel NH3 use,
connect the Temperature Interface Module to Flowme-
ter Bus 1.
Implement Height and
Speed Input
Not used in all configurations, the imple-
ment height and speed input connections
provide additional input options in situa-
tions that require advanced alarm control
and an auxiliary speed source. These
conditions generally exist only in hybrid
systems, utilizing multi-branded compo-
nents.
In-Cab Display
(user-provided)
CAN Bus and Power
-In Connectors
CAN Bus and Power-
Out Connectors
(Terminator)
Implement Switch
(optional)
FlowMeter
Bus 2
FlowMeter
Bus 1
Front ISO Extension
(optional)
Tractor
ISOBUS
Sentinel ECU
Speed Input
(optional)
Term. Resistor
Programming
LS Controller Prod 2
LS Controller Prod1
RS232
C
Components
Wiring & Elec.
LiquiShift Connections
These two connectors are not used for
Anhydrous Ammonia Application.
SurePoint
Ag
Systems