Datasheet

Solid-State Switching Devices for Resistive Loads
3RF29 Function Modules
SIRIUS load monitoring for 3RF2
4/99
Siemens IC 10 · 2011
* You can order this quantity or a multiple thereof.
Illustrations are approximate
4
■ Overview
Load monitoring for 3RF2 single-phase solid-state switching
devices
Many faults can be quickly detected by monitoring a load circuit
connected to the solid-state switching device, as made possible
with this module. Examples include the failure of load elements
(up to 6 in the basic version or up to 12 in the extended version),
alloyed power semiconductors, a lack of voltage or a break in a
load circuit. A fault is indicated by one or more LEDs and re-
ported to the controller by way of a PLC-compatible output.
The principle of operation is based on permanent monitoring of
the current intensity. This figure is continuously compared with
the reference value stored once during start-up by the simple
press of a button. In order to detect the failure of one of several
loads, the current difference must be 1/6 (in the basic version) or
1/12 (in the extended version) of the reference value. In the event
of a fault, an output is actuated and one or more LEDs indicate
the fault.
■ Application
The device is used for monitoring one or more loads (partial
loads). The function module can only be used in conjunction with
a 3RF21 solid-state relay or a 3RF23 solid-state contactor. The
devices with spring-type connections in the load circuit are not
suitable.
■ Selection and ordering data
Rated operational current
I
e
Rated operational voltage
U
e
DT Screw terminals PU
(UNIT,
SET, M)
PS* PG
AV
Order No. Price
per PU
Basic load monitoring
3RF29
Rated control supply voltage 24 V DC
6-- A
3RF29 06-0FA08 1 1 unit 101
20 -- A
3RF29 20-0FA08 1 1 unit 101
• With mounted 3RF29 00-0RA88 cover
6-- A3RF29 06-0FA08-0KH0 1 1 unit 101
20 -- A
3RF29 20-0FA08-0KH0 1 1 unit 101
Extended load monitoring
3RF29
Rated control supply voltage 24 V AC/DC
20 110 … 230 A
3RF29 20-0GA13 1 1 unit 101
20 400 … 600 A
3RF29 20-0GA16 1 1 unit 101
50 110 … 230 A
3RF29 50-0GA13 1 1 unit 101
50 400 … 600 A
3RF29 50-0GA16 1 1 unit 101
90 110 … 230 A
3RF29 90-0GA13 1 1 unit 101
90 400 … 600 A
3RF29 90-0GA16 1 1 unit 101
Rated control supply voltage 110 V AC
20 110 … 230 A
3RF29 20-0GA33 1 1 unit 101
20 400 … 600 A
3RF29 20-0GA36 1 1 unit 101
50 110 … 230 A
3RF29 50-0GA33 1 1 unit 101
50 400 … 600 A
3RF29 50-0GA36 1 1 unit 101
90 110 … 230 A
3RF29 90-0GA33 1 1 unit 101
90 400 … 600 A
3RF29 90-0GA36 1 1 unit 101
Version DT Order No. Price
per PU
PU
(UNIT,
SET, M)
PS* PG
Optional accessories
3RF29 00-0RA88
Sealable covers
for function modules (not for converters)
B
3RF29 00-0RA88 1 10 units 101
© Siemens AG 2010