K-Patents SeedMaster 2 - Manual (Page 23)

4 TECHNICAL DATA, MOUNTING AND ELECTRICAL CONNECTIONS 23
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Calculated outputs
1. Analog (0-20, 4-20 mA) outputs:
Any 2 of the 7 calculated massecuite parameters (per pan).
2. Digital (ON / OFF) outputs:
1. DO1: Warning on approaching seeding (programmable).
2. DO2: Opening the seeding valve for a selected time interval.
NOTE:
All calculated and measured data can be also transmitted via digital communication.
Process interface
Inputs
1. Analog current 8 channels
Symmetrical, galvanically isolated
Range 0(4)-20 mA, keyboard selectable
Input impedance 100 Ohm
Common mode voltage 50 V max.
2. RTD (Pt 100) (option) 2 channels
4 wire connecting mode
3. Digital (ON / OFF) 8 channels
Signal sources: passive, contact or open collector
active, + 24 V
dc
automatic signal detection
Outputs
1. Analog current 4 channels
Galvanically isolated
Range 0(4)-20 mA, keyboard selectable
Max. load 600 Ohm
2. Digital ON / OFF) 4 channels
Isolated open collector,
overvoltage and short circuit protected
3. Power supply for transmitters 1 X 24 Vdc, 200 mA max.
4. Device Status (ON/OFF) Operating / Error
Communication
1. Serial (COM1, COM2, COM3) 3 ports
Galvanically isolated
Standards RS232, RS422, RS485 (keyboard selectable)
Control signals CTS, RTS (keyboard selectable)
Baud rates 1200…38400 Baud (keyboard selectable)
Length of cable RS232 15 m max.
RS422 /485 1200 m max.
Protocols K-PATENTS refractometer protocol
MODBUS SLAVE (ASCII, RTU)
2. Ethernet 10 6 100 Base T
Connector RJ45
Protocols TCP / IP, MODBUS TCP,
UDP / IP (K-PATENTS refractometer protocol)
Front panel
Display 5,7 ‘ QVGA 320x240 graphic LCD
Keyboard Membrane switches with flexible foil cover
LED indicators Power, Run, Alarm
Power supply 100…240 V ac, 50 / 60 Hz; 10-25 VA
24 (18…30) Vdc