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Siemens D 15.1 · 2017
Description of Options
Description of options
4
■
Options
(continued)
L55
Cabinet anti-condensation heating, temperature-monitored
The anti-condensation heating is recommended at low ambient
temperatures and high levels of humidity to prevent condensa-
tion. The number of cabinet heaters installed depends on the
number of cabinet panels
(refer to the table)
. A constant mini-
mum temperature in the cabinet is ensured as the temperatures
of the anti-condensation heaters are automatically monitored
using a thermostat. The anti-condensation heating is controlled
using a bimetallic switch that can be adjusted.
Note:
This option includes overtemperature protection.
Note:
The customer provides the supply voltage.
L81
2 x 2 thermistor protection relays
Option
L81
includes four thermistor protection relays for PTC
thermistors (type A) for alarm and trip. The power supply for the
relay and the evaluation is provided in the drive.
L82
3 x 2 thermistor protection relays
Option
L82
includes six thermistor protection relays for PTC
thermistors (type A) for alarm and trip. The power supply for the
relay and the evaluation is provided in the drive.
L91 to L95
Temperature detection and evaluation
Mutually exclusive options
L91
to
L95
L91
2 Pt100 evaluation units with 3 inputs each
Each Pt100 evaluation unit can monitor up to three sensors. For
all three sensors, the limits for alarm and trip must be set cen-
trally. The output relays are integrated into the internal fault and
shutdown circuit of the drive.
L93
Pt100 evaluation unit with 6 inputs and 2 analog outputs
The Pt100 evaluation unit can monitor up to six sensors. The limit
values can be programmed by the user for each channel. In the
standard setting, the measuring channels are divided into two
groups of three channels each. With motors, for example, three
Pt100 can be monitored in the stator windings and two Pt100 in
the motor bearings. Channels that are not used can be sup-
pressed using appropriate parameter settings.
The output relays are integrated into the internal fault and shut-
down circuit of the drive. Additionally two freely programmable
analog outputs (0/4 mA to 20 mA and 0/2 V to 10 V) are avail-
able.
Note:
The analog outputs are not evaluated by the control.
L95
Pt100 evaluation unit with 6 inputs for ex-proof motors and
6 analog outputs
For use in explosion-proof motors, Zone 2, Zone 22 (non-con-
ductive dusts) Div. 2, and non-hazardous zones, six evaluation
units are available (marking, explosion protection:
II (1) GD [EEx ia] IIC/IIB and II 3 G EEx nAC II T4). The resistance
thermometers can be connected using a two-wire, three-wire or
four-wire system. The following temperature sensors can be
connected:
Resistance thermometers according to IEC 60751: Pt100, Pt500,
Pt1000,
Resistance thermometers according to DIN 43760: Ni100,
Ni500, Ni1000
The alarm and fault messages are combined and integrated into
the signaling and shutdown circuit of the drive.
Note:
The analog outputs are not evaluated by the control.
Note:
The maximum cable cross-section that can be connected on the
plant side is 1.5 mm². The cables for the intrinsically safe circuits
are routed according to the layout diagram.
Article No.
Number and power of the heaters
6SR4..., 2.4, 3.3 and
4.0/4.16 kV
3 heaters, 100 W each
6SR4..., 6.0 and 6.6 kV
5 heaters, 100 W each
6SR3...
7 heaters, 100 W each
Temperature detection and evaluation
Code
L91
L93
L95
2 Pt100 evaluation units with 3 inputs each
L91
–
–
Pt100 evaluation unit with 6 inputs and 2 ana-
log outputs
L93
–
–
Pt100 evaluation unit with 6 inputs for ex-proof
motors and 6 analog outputs
L95
–
–
–
Options are mutually exclusive.
© Siemens AG 2017