26
Operating Instructions – MOVITRAC® LTE-B
4
Electrical installation
Installation
•
INFORMATION
• Connect the brake rectifier using a separate supply cable.
•
Supply via the motor voltage is not permitted.
In the following applications, always cut-off the brake in the AC and DC circuits:
• All lifting applications
• Applications that require a quick brake reaction time
Motor temperature
protection (TF/TH)
Motors with internal overtemperature sensor (TF, TH or similar) can be directly con-
nected to MOVITRAC
®
LTE-B inverters. An error might be displayed on the inverter.
The sensor is connected to terminal 1 (+24 V) and binary input 3, see section "Overview
of signal terminals" (page 26). Parameter
P-15
must be set to external error input to re-
ceive overtemperature shutdown. The shutdown level is set to 2.5 k
Ω
.
Multi-motor
drive/group drive
The overall nominal motor current must not exceed the nominal current of the inverter,
see chapter "Technical Data" (page 52).
The motor group is limited to five motors. The motors of a group must not differ by more
than 3 frame sizes.
The maximum permitted cable length for the group is limited to the values of single con-
nection, see chapter "Technical Data" (page 52).
For groups with more than 3 motors, SEW-EURODRIVE recommends to use an output
choke.
4.3.3
Overview of signal terminals
IP20 and IP55
IP55 and IP66 with switch option
9007202188150411
9007202188152075
+24 V
DI 1
DI 2
DI 3
+1
0 V
AI
/DI
0 V
AO/DO
0 V
Re
la
y co
nt
ac
t
Re
la
y co
m
m
on
1 2 3 4 5 6 7 8 9 10 11
+24 V
DI 1
DI 2
DI 3
+1
0 V
AI
/DI
0 V
AO/DO
0 V
Re
la
y co
nt
ac
t
Re
la
y co
m
m
on
1 2 3 4 5 6 7 8 9 10 11
FWD
REV
Summary of Contents for MOVITRAC LTE-B series
Page 2: ...SEW EURODRIVE Driving the world...
Page 76: ......
Page 77: ......
Page 78: ......
Page 79: ......
