EXCEL 50 INSTALLATION INSTRUCTIONS
EN1B-0101GE51 R1105D 14
Sensors and Transducers
AGND
00000061
31
33
35
37
39
41
43
45
47
32
34
36
38
40
42
44
46
48
AI1
A
B
C
AI6
AI8
R1
ACTIVE
SENSOR
TRANSFORMER FOR
ACTIVE SENSOR
1
2
0-10V
0(4) to
20 mA
499
0.25%
SENSOR
NTC 20 k
AI2
AI3
AI4
AI5
AI7
4 33
3
2
34
31
SAF25
0 - 5 V
I = 1 mA
10 33
11
12
34
31
VMP
0 - 10 V
I = 1 mA
10 Vdc
max. 5 mA
Fig. 22. Analog inputs, sensor connections
Analog Inputs Used as Digital Inputs (O.S. 2.03.xx or
lower)
L
N
AGND
0000062a
31
NORMALLY OPEN
230 Vac/ 50 Hz
120 Vac/ 60 Hz
230 Vac/ 50 Hz
120 Vac/ 60 Hz
L
N
NOT CONNECTED
NORMALLY OPEN
NOT CONNECTED
NORMALLY CLOSED
10 Vdc
max. 10 mA
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
AI1
AI3
AI6
AI8
AI4
AI2
AI7
AI5
Fig. 23. Analog inputs used as digital inputs
For normally-open contacts, a digital signal must be switched
via the changeover contact of an additional relay.
Unconnected analog inputs have a default voltage of 8.5 V.
This is interpreted by the controller as a logical 1. This means
that, in general, no external relay is needed for normally-open
contacts.
IMPORTANT
The relay contact must be suitable for switching low
voltage. In the case of long cable distances, the
analog input signal may be sensitive to interference.
In this case, an external relay may also be used for
normally-closed contacts.
Analog Inputs Used as Digital Inputs (O.S. 2.04.xx or
higher)
L
N
AGND
0000062m
31
POWER
10 Vac
230 Vac/ 50 Hz
120 Vac/ 60 Hz
230 Vac/ 50 Hz
120 Vac/ 60 Hz
L
N
NOT CONNECTED
NORMALLY CLOSED
NOT CONNECTED
NORMALLY OPEN
10 Vdc
max. 5 mA
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
AI1
AI3
AI6
AI8
AI4
31
AI2
31
AI7
Fig. 24. Analog inputs used as digital inputs
Unconnected inputs have a default voltage of 0 V.
Table 6. Accuracy of analog inputs with NTC sensors
range
deviation / ± Kelvin
(without sensor tolerance)
NTC (20 kΩ)
-58 to <-40°F (-50 to <-40°C) ≤ 5.5 K
-40 to <-22°F (-40 to <-30°C) ≤ 3.0 K
32 to <-4°F (-30 to <-20°C) ≤ 1.8 K
86 to <14°F (-20 to <-10°C) ≤ 1.1 K
158 to <32°F (-10 to <0°C) ≤ 0.8 K
212 to <50°F (0 to <10°C) ≤ 0.6 K
266 to <122°F (10 to <50°C) ≤ 0.4 K
266 to <158°F (50 to <70°C) ≤ 0.6 K
266 to <194°F (70 to <90°C) ≤ 1.0 K
266 to <212°F (90 to <100°C) ≤ 1.5 K
266 to <248°F (100 to <120°C) ≤ 2.4 K
266 to <302°F (120 to <150°C) ≤ 5.3 K