Section 2-- Identification and Function of Parts 2-51
© 2008, Satake USA Inc.
(ALL RIGHTS RESERVED)
connection. When using the RS-485 interface, TX+ connects to the computer’s RX+
connection.
The ScanMasterII is also equipped with an RJ45 (standard Ethernet) connector
located in the lower power enclosure. This is used when activating the Satake
Everywhere or DataScan options.
2.24.2 PLC CONNECTIONS
Connectors TB2 and TB3 provide a means for connecting external electrical
equipment which will be used to control or monitor the ScanMasterII. Refer to the
ScanMasterII Parts and Schematic Manual before making connections.
TB2 terminal 1 (4-20+) and terminal 2 (4-20-) allow an external signal to control the
rate of the primary vibratory feeders on the ScanMasterII. TB2 terminals 3 and 4
(Feed Run) allow an external control signal to remotely turn on/off the primary
vibratory feeders. These same terminals on TB3 serve the same functions for the
resort feeder(s). Verify the design voltage for the control signal corresponding to
the version of the System Interface PCB. (-1, 115VAC; -2, 230VAC, -3, 24VDC).
TB2 terminals 5 through 8 provide output from the ScanMasterII to a PLC or other
electrical devices. These outputs are dry contact closures and no connection is
required for remote operation of the vibratory feeders. TB2 terminals 5 and 6 (REM)
provide an isolated contact closure when the system is configured from the SETUP2
SCREEN for PLC input to control the feeder functions. TB2 terminals 7 and 8 (Alarm
Out) provide an isolated contact closure whenever the ScanMasterII is either
powered OFF or an alarm condition exists.
TB3 terminals 5 through 8 provide communication to and from the control
computer. Specific programming changes are required to use these connections.
Contact the factory for details.
CAUTION: The following procedures require making electrical connections to
the machine. DANGEROUS voltages exist in the area where the connections will
be made. Disconnect power from the machine before making these connections.
A qualified electrician should make all connections.
2.24.2.1 CONNECTING THE 4-20 MILLIAMP CONTROL
The following steps should be performed when using the 4-20 milliamp control:
1. Test the polarity of the PLC 4-20 milliamp control wires to determine
which wire is positive (+) and which wire is negative (-). Measure the
open circuit voltage to ensure that the PLC current source has a
source voltage of at least 12 volts DC. Connect the PLC 4-20 milliamp
control positive wire to connector TB2-1 and the negative wire to
connector TB2-2.
2. Connect the control wires from the PLC to TB2-3 and TB2-4.
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