IV25101A_e.DOC / Feb-08
Page 6 / 25
2.2.
Encoder connections with Slave operation
With this mode, the IV251 converter operates in parallel to another unit, acting as a „listener“
to the existing data communication.
Quite according to need, the common potential of the master can be connected to terminal 12
(GND), or remain open for fully differential operation.
2
3
8
9
11 (+5.5V)
12 (GND)
IV251 converter
Slave mode
+
-
Cl
oc
k+
Cl
oc
k-
Da
ta
+
Da
ta
-
Encoder
Master
Clock-
Clock+
Data-
Data+
2.3.
Analogue outputs
The unit provides one +/-10V voltage output and one 0-20 mA / 4-20 mA current output at a
resolution of 14 Bits (i.e. the voltage output operates in steps of 1.25 mV).
The nominal load of the voltage output is 2 mA; the current output accepts loads between
0 and 270 Ohms.
There is a separate analogue ground terminal, which internally is connected to the GND
potential of the power supply
GND
4
1
+/- 10V
(max. 2 mA)
Vout
Voltage output
GND
4
7
0/4 - 20 mA
(R = 0 ... 270 Ohms)
Iout
Current output
