Specifications
AS-Interface Slaves
Motor starters for operation in the field, high degree of protection
AS-Interface compact starters, 400 V AC
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Siemens IK PI · 2009
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Overview
The AS-Interface compact starter is a load feeder with degree of
protection IP65, which is fully prewired inside, for switching and
protecting any AC loads up to 5.5 kW at 400/500 V AC (electro-
mechanical compact starter) or up to 2.2 kW (solid-state com-
pact starter) – mostly standard induction motors in direct start
and reversing duty. It consists either of an electromechanical
controlgear combination or a solid-state overload protection and
motor starter protector unit. The overload or short-circuit protec-
tion is located below a sealable, transparent cover and is there-
fore available for diagnostics. Two LEDs are provided to the left
of the cover for diagnostics purposes for the AS-Interface and
the auxiliary power.
It is not possible for live parts to be touched even when the cover
is open. The contacts are activated through the integrated out-
puts. The status of the device is scanned through the inputs,
e.g. feedback from the auxiliary contacts of the motor starter
protector and contactor(s). A further input is used to detect the
operating mode of the optional hand-held device. The three
power connectors are used to feed and loop through to the load
supply voltage (power bus) and to connect to the load itself.
Prefabricated power supply cables can be used to connect
compact starters which are directly adjacent to each other.
Prefabricated power supply lines can be used to connect
compact starters which are directly adjacent to each other.
The maximum number of starters that can be supplied with one
power supply cable is limited by the maximum permissible
summation current (up to max. 4 mm
2
corresponds to ~ 35 A).
DS/RS compact starters (electromechanical)
The electromechanical compact starters consist of a conven-
tional controlgear combination with a SIRIUS motor starter pro-
tector for protection against short-circuits and overloading and
SIRIUS contactor(s) for normal switching. The advantages of the
electromechanical starters are the reliable electrical isolation
during disconnection and tripping, the integrated fuseless pro-
tection against short-circuits and the favorable price. What is
more, direct currents can also be switched with the electrome-
chanical starters.
Configuring note:
In the case of temperature-critical applications, we recommend
operation in the lower setting range of the motor starter protector.
EDS/ERS compact starters (solid-state)
The solid-state compact starters EDS (direct-on-line starter) and
ERS (reversing starter) consist of a solid-state overload relay
and a solid-state motor starter protector unit.
The advantages of these solid-state compact starters are the
broad limits within which the overload protection can be ad-
justed (the performance range up to 2.2 kW at 400/500 V AC is
covered with just 2 variants), the fact that the motor starter pro-
tector units are non-wearing, current measurement (used for
monitoring the energy connector), emergency operation in the
event of an overload as well as remote resetting via the AS-
Interface after overload tripping.
The ERS compact starter is designed for direct start in reversing
duty. The solid-state overload protection and the shutdown re-
sponse in the event of overload can be adjusted directly at the
device.
Version with brake contact
All compact starters are available optionally with a separately
activated brake contact for electrically operated motor brakes.
For externally fed motor brakes, 24 V DC is supplied jointly with
the load voltage through the power connector on -X1. It is looped
through via -X3 for supplying the next compact starter on -X1.
The 24 V DC supply for the brakes is only linked in those devices
equipped with a brake contact. At the project configuration
stage, it is important to ensure that these starters are located
alongside each other.
All compact starters with a brake contact for 500 V DC can be
equipped with an 400 V AC brake contact.
Hand-held device
The hand-held device enables the compact starter to be oper-
ated locally and autonomously, providing that the auxiliary volt-
age supply is connected. Thus, assuming that the automation
level is functioning correctly, local switching operations can be
carried out in addition to normal manual operations in the event
of a programmable controller / bus system failure (emergency
mode) or during test runs before commissioning, e.g. for testing
the direction of rotation of the motor. The hand-held device can
be connected to the compact starter by means of a connecting
cable through a socket underneath the transparent cover.
Spare inputs
The compact starters are also equipped with two spare inputs.
The M12 socket is a "Y" connector. The signal inputs are applied
to PIN 2 and 4. In this manner, it is possible, for example, to con-
nect an optical proximity switch that supplies a signal and the
"contamination" alarm.
A "T" adapter can be used to split the signal inputs onto two
M12 sockets. Compact starters modified in this way offer addi-
tional advantages. At no extra cost, it is possible to save AS-i ad-
dresses, reduce the space requirement and to build up logical
groupings.