6
Operating modes and limit values
Permitted operating modes
Operating Instructions – EDR..71 – 315, EDRN63 – 315
91
6
Operating modes and limit values
6.1
Permitted operating modes
6.1.1
Permitted operating modes and protection concept for category 2 motors
Design
Duty types
acc. to name-
plate
Additional
nameplate
Permitted
duty types
Protection
against
excessive heating
Identification on
the nameplate
2G
2D
2GD
S1
–
Line operation:
S1
Motor circuit breaker
1)
Time t
E
and
relation I
A
/I
N
2D: without t
E
time
S1, S4 50%
–
Line operation:
S1, S4 50%
PTC thermistor /TF
2)
t
A
time, PTC accor-
ding to DIN VDE V
0898-1-401, relay
functionally tested
according to II(2)G
S1
VFC
Line operation:
S1
Motor circuit breaker
1)
Time t
E
and
relation I
A
/I
N
2D: without t
E
time
S1
VFC
Inverter opera-
tion
PTC thermistor /TF
2)
and speed-dependent
current limiting in the
inverter
3)
Additional name-
plate: X identification
and permitted con-
tinuous currents are
indicated depending
on the frequency
1) Monitoring device for protecting explosion-proof drives (e.g. Directive 2014/34/EU)
2) The catalog designation for PTC thermistors is "/TF". Monitoring of the PTC thermistor by a thermistor monitoring device for protect-
ing explosion-proof drives (e.g. Directive 2014/34/EU).
3) The frequency inverter must comply with the requirements of the EU type examination certificate
25896334/EN – 06/2019