Sensors And Transducers - Honeywell Excel 50 Installation Instructions Manual

EXCEL 50 INSTALLATION INSTRUCTIONS

Sensors and Transducers

0 - 5 V
4 33
A
3 34
2 31
I = 1 mA
SAF25
SENSOR
0 - 10 V NTC 20 k
10 33
11 34
B
12 31
I = 1 mA
ACTIVE
VMP
SENSOR
0-10V
TRANSFORMER FOR
ACTIVE SENSOR
C
0(4) to
20 mA
Fig. 22. Analog inputs, sensor connections
Analog Inputs Used as Digital Inputs (O.S. 2.03.xx or
lower)
NOT CONNECTED
NORMALLY CLOSED
L
230 Vac/ 50 Hz
120 Vac/ 60 Hz
N
NORMALLY OPEN
NOT CONNECTED
NORMALLY OPEN
L
230 Vac/ 50 Hz
120 Vac/ 60 Hz
N
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.
EN1B-0101GE51 R1105D
10 Vdc
31
max. 5 mA
32
33
1
AI1
2
34
35
AI2
36
37
AI3
38
39
AI4
40
41
AI5
42
43
AI6
44
45
AI7
46
47
R1
AI8
48
499
0.25%
10 Vdc
31
max. 10 mA
32
33
AI1
34
35
AI2
36
37
AI3
38
39
AI4
40
AGND
41
AI5
42
43
AI6
44
45
AI7
46
47
AI8
48
Analog Inputs Used as Digital Inputs (O.S. 2.04.xx or
higher)
NOT CONNECTED
NORMALLY OPEN
230 Vac/ 50 Hz
AGND
120 Vac/ 60 Hz
NOT CONNECTED
NORMALLY CLOSED
230 Vac/ 50 Hz
120 Vac/ 60 Hz
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
-58 to <-40°F (-50 to <-40°C)
-40 to <-22°F (-40 to <-30°C)
32 to <-4°F (-30 to <-20°C)
86 to <14°F (-20 to <-10°C)
158 to <32°F (-10 to <0°C)
212 to <50°F (0 to <10°C)
266 to <122°F (10 to <50°C)
266 to <158°F (50 to <70°C)
266 to <194°F (70 to <90°C)
266 to <212°F (90 to <100°C)
266 to <248°F (100 to <120°C)
266 to <302°F (120 to <150°C)
14
AI1
AI2
AI3
L
AI4
N
POWER
31
10 Vac
31 AI6
AI7
AI8
L
N
deviation / ± Kelvin
range (without sensor tolerance)
10 Vdc
31
max. 5 mA
32
33
34
35
36
37
38
39
40
AGND
41
42
43
44
45
46
47
48
NTC (20 kΩ)
≤ 5.5 K
≤ 3.0 K
≤ 1.8 K
≤ 1.1 K
≤ 0.8 K
0.6 K
≤
≤ 0.4 K
≤ 0.6 K
≤ 1.0 K
≤ 1.5 K
2.4 K
≤
≤ 5.3 K