Connecting The Th101, Th101-Ex Transmitter - ABB TH01 Notice D'utilisation

Important
For the optional, two-channel model of the TH01, TH101-Ex temperature transmitter, the two channels are
independent of each other and have no electrical connection.
3.3

Connecting the TH101, TH101-Ex transmitter

11
21 22 22
+
41
31 32
+
The maximum permissible load R
resistance R
calculated from this may not be exceeded.
Example 1:
U = 30 V:
S
≤ 954 Ω − (2 × R
R
load
U = supply voltage
S
Fig. 3-3
DANGER
The shield may only be earthed at one end on the power supply.
3KDE115000R4284 Temperature Transmitter TH01, TH01-Ex, TH101, TH101-Ex
TH101, TH101-Ex temperature transmitter for rail assembly
12 13
ABB
TH101-Ex
min. 9 V
_
Channel 2 (optional)
42
Channel 1
_
Line resistance
Shield
Line resistance
Shield
load
is calculated using the following formula. Depending on the supply voltage Us, the value
L
≤ [(U
R
load
)
L
Connecting the TH101, TH101-Ex
R
load
(e.g. indicator, 250
R
L
R
L
R
load
(e.g. indicator, 250
R
L
R
L
(e.g. indicator, 250 Ω communication resistance etc.) including the lead
-9 V) / 0.022 A] - (2 × R
S L
Example 2:
U = 24 V:
S
≤ 681 Ω − (2 × R
R
load
Ω
communication resistance, ...)
+
≥
U 9...30 V DC
S
_
GND
Ω
communication resistance, ...)
+
≥
U 9...30 V DC
S
_
GND
)
)
L
29