EXCEL 50 INSTALLATION INSTRUCTIONS
15
EN1B-0101
Firmware Release 2.03.xx and older
L
N
AGND
0
00
0
06
2
a
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. 25. 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. For 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.
Firmware Release 2.04.xx
L
N
AGND
0
0
00
0
62m
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. 10 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. 26. Analog inputs used as digital inputs.
Table 7. Accuracy of analog inputs with NTC sensors
Range
Deviation / ± Kelvin
(without sensor tolerance)
NTC (20k ohms)
-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
