TST
Startup
FU3E
FEIG ELECTRONIC GmbH
Page 10 of 29
FU3E_Inbetriebnahme_7_GB.doc
4.4 Connecting limit switches
Three various limit switch systems can be used with the TST FU3E door controller.
In the standard setting an absolute encoder is used as the limit switch. In addition, mechanical cam limit
switches or incremental encoders may be used.
4.4.1 Absolute encoder
4
5
6
1
2
3
GND
+12V
RS 485-B
RS 485-A
24V
emergency
stop line
emergency
stop line
Fig. 6: Absolute encoder
X13
X20
X14
Si2
12V
Si1
S1a S2a
S1b S2b
1
3
2
4
5
7
6
8
9
11
10
12
13
15
14
16
17
19
18
20
21
23
22
24
25
27
26
28
29
31
30
32
X18
X17
3 2
4
6
Absolute encoder
1
5
4
2
3
6
1
5
12V
GN
D
B
A
Fig. 7: Connecting the absolute encoder
4.4.2 Mechanical limit switches
Fig. 8: Cam switch
Limi
t s
w
itch O
P
EN
Li
m
it sw
itch
CL
O
S
E
Pre limit sw
itch OPEN
Pr
e li
m
it s
w
itc
h CLO
S
E
Pre
lim
it sw
itch edge
Emergency
limit switch
CLOSE
Emergency
limit switch
OPEN
Crank switch
Thermo pill
X13
X14
S1a S2a
S1b S2b
1
3
2
4
5
7
6
8
9
11
10
12
13
15
14
16
17
19
18
20
21
23
22
24
25
27
26
28
29
31
30
32
X18
X17
Fig. 9: Connecting cam switches
)
Alternately the pre-limit switches can also be connected as normally closed contacts