AMC-400 Series Digital Transmitter with Smart Sensor 2
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8. Power and Communication
Connector:
This 6 pin male plug connector contains both power and
communication network connection points. The power is
normally 24VDC and the communication network is
MODBUS over RS-485.
9. GND Test Point:
This GND Test Point is to be used by service technicians
only with appropriate instrumentation such as a voltmeter. It
is the signal reference point for the digital transmitter control
logic.
10. VDD Test Point:
This VDD Test Point is to be used by service technicians
only. It is the digital transmitter control logic supply voltage
and must be 5+/-5% Volts DC.
11. V+ Test Point:
This V+ Test Point is to be used by service technicians only.
It is the digital transmitter rectified unregulated power input
and meet the range specified in 2.1.1
AMC-400 DIGITAL
TRANSMITTER SPECIFICATION.
12. SS2 Female Connector:
This 7 pin connector mates with the Smart Sensor 2 Module
male connector. This connector carries the power and
communication for Smart Sensor 2.
13. Smart Sensor 2 Termination:
Default position: AC Termination (Pins 1-2, bottom). This
termination allows AC or DC Termination for the Smart
Sensor 2 RS-485 signaling.
14. MODBUS Termination:
Default position: No Termination (Pin 2) as shown in Figure
3-2. This termination allows AC or DC Termination for the
MODBUS RS-485 signaling. Use AC Termination (Pin 1-2,
bottom) when transmitter is an end point on bus.
15. SS2 Mounting Hole:
This mounting hole contains two standoffs to support the
Smart Sensor 2 Module. One standoff is a stud the other is
nylon press-fit.
