5/2004 Manual for connection and operation of the EV-94 EB page 5 of 28
3. Electric connection
Wiring and commissioning of the device must be carried out by skilled personnel only.
In case of wrong wiring the EV-94 EB may be destroyed. We can not assume any warranty in case of
wrong wiring of the device.
3.1. Terminal assignment
11
EASY
BUS
-Interface
10
EASY
BUS
-Interface
9
Input: 0-1V, 0-2V, mA, frequency, Pt100, Pt1000
8
Input: 0-50mV, thermocouples, Pt100
7
Input: GND, Pt100, Pt1000
6
Input: 0-10V
5
Supply voltage: GND
4
Supply voltage: +Uv
3
Switching output: GND
2
Switching output: 2
1
Switching output: 1
Hint: The contacts 3, 5 and 7 are connected internally.
3.2. Connection data
typical
limitations
Between
terminals
min.
max.
min.
max.
notes
Supply voltage
4 and 5
9 V
28 V
0 V
30 V
NPN
30V,
I<1A
Not short circuit pro-
tected
Switching output
1 and 2
PNP
1 and 3,
2 and 3
I<200mA
Not short circuit pro-
tected
Input mA
0 mA
20 mA
0 mA
30 mA
Input 0-1(2)V, Freq., ...
9 and 7
0 V
3.3 V
-1 V
30 V,
I<10mA
Input 0-50mV, TC, ...
8 and 7
0 V
3.3 V
-1 V
10 V,
I<10mA
Input 0-10V
6 and 7
0 V
10 V
-1 V
20 V
These limits must not be exceeded (not even for a short time) !
3.3. Connecting an input signal
Please take care not to exceed the limitations of the inputs when connecting the device as this may lead
to destruction of the device:
3.3.1. Connecting a Pt100 or Pt1000 RTD probe or a thermocouple probe
Pt1000-RTD probe (2-wire)
Pt100-RTD probe (3-wire)
Thermocouple probe
11
10
98
765
3
2
1
4
11
10
9
8
7
6
5
4
3
2
EASYBUS
1V, mA, Freq., Pt100(0)
mV, TC, Pt100
GND, Pt100(0)
10V
GND, Supply -Uv
Uv
GND
EASYBUS
1
Output 2
Output 1
TC
4
5
7
8
-
+
+
_
Supply
9-28 VDC
Pt100
4
5
7
8
9
+
_
Supply
9-28 VDC
Pt1000
+
_
Supply
9-28 VDC
4
5
7
9
