6
Table 7. Numbering and description of terminal strips.
Terminals
Description
1-2-3
input Pt100, Ni100, Pt500, Pt1000, resistance, (2-
and 3-wire RTD)
2-3
thermocouple input TC (J, K, S, B, R, T, E, N) and
voltage input 0÷60 mV
3-5
current input 0/4÷20 mA
4-5
voltage input 0÷10 V
6-7
power supply input 24 VAC/DC
8-9-10
input RS232C or RS485
11-12
alarm output (on/off type)
Usup - power supply voltage
OC - output of the open collector type, NPN transistor
JP1 - a clamp terminating the lines of the RS485 interface with a 120 Ω
resistor (termination switched on when JP1 is closed)
8. LOCATION AND DESCRIPTION OF ELEMENTS OF THE FRONT PANEL
Table 8. Description of the elements of the front panel.
Symbol Description
PR
programming socket (do not use during transmission
from devices connected to the RS232C line or the
RS485 line of the AR594 transducer)
A
LED signaling of exceeded processing range,
sensor error, or OC alarm output status
Rx/Tx
LED signaling of serial transmission
NOTE:
Connecting other devices than the AR950or AR956 programmer to the PR socket may result in damage to
the connected device and the AR594 transducer.
7. DESCRIPTION OF TERMINAL STRIPS AND ELECTRICAL CONNECTIONS
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