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What is 3TK28xx?

This electronic component, produced by the manufacturer "Siemens", performs the same function as "(3TK28xx / 3TK29xx) Contactor Safety Combination".


3TK28xx Datasheet PDF - Siemens

Part Number 3TK28xx
Description (3TK28xx / 3TK29xx) Contactor Safety Combination
Manufacturers Siemens 
Logo Siemens Logo 


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Contactor Safety Combination
Instructions
3TK2803, 3TK2804
3TK2907, 3TK29.3
DIN EN 60439 Part 1/ VDE 0660 Part 500 (04.94)
Order No.: 3ZX1012-0TK20-1AA2
English
WARNING:
HAZARDOUS VOLTAGE
CAN CAUSE ELECTRICAL SHOCK
AND BURNS.
www.DataSheet4U.cDoImSCONNECT POWER BEFORE PROCEEDING
WITH ANY WORK ON THIS EQUIPMENT.
Operation permissible in switchgear cabinet with degree of protection
IP 54 only!
Application
The contactor safety combinations can be used in EMERGENCY-OFF circuits
and for monitoring protective devices (e.g. protective screens).
Functions and connections
The internal control circuit of the contactor safety combination is designed
according to DIN EN 60204, Part 1 (VDE 0113, Part 1), para. 9.4.2.2, so that
in the case of a fault in one of the contactor relays the function of the safety
circuit is maintained. The supply voltage must meet the requirements of the
DIN EN 60204 (VDE 0113, Part 1) (the terminals “L-/N; A2“ must be connec-
ted to that side of the control current circuit which is linked to the protective
conductor system).The contacts of the contactor relays are checked for pro-
per opening and closing in every ON and OFF cycle of the machine to be swit-
ched. This is, for instance, done by
- connecting and disconnecting the control voltage with the main
switch,
- activating and deactivating the EMERGENCY-OFF unit
- opening and closing of the protective screen.
For circuit diagrams, see:
Fig. III: EMERGENCY-OFF circuit
Fig. IV: Protective screen monitoring (A=door open; B=door closed)
Fig. V: EMERGENCY-OFF with expansion module (no delay)
Fig. VI: EMERGENCY-OFF with time-delay module
For internal circuit diagrams, see Low-Voltage Control Equipment,
Switchgear and Systems Catalog.
Note: The units are tested by the BIA. The external control circuit connec-
tions are shown for example only; the actual connections must be defined
by the user on the basis of a risk assessment.
Further applications available upon request.
Installation
For dimension drawings see Fig. I (dimensions in mm).
Minimum clearances from earthed parts on the sides: 3 mm (see Fig. IIa).
Connection see Fig. IIb.
Cover the contactor safety combination during installation if foreign
particles, such as swarf, can fall onto it. Install contactor safety combi-
nations in a housing if they are exposed to dirt, dust or aggressive
atmospheres.
Permissible operating position: any
Cleaning: Remove dust with a vacuum cleaner
Operation
Operating states of the unit:
“READY“ (3TK2803/2804) indicates that voltage is applied to the unit, pro-
vided that the contacts of the EMERGENCY OFF pushbutton or door safety
switch are closed.
“ON“ lights up, when the ON button is pressed and the enabling circuits are
switched through.
“FEEDBACKCIRCUIT“ (3TK29.3/2907) lights up when the ON button is
pressed and the enabling circuits of the expansion modules are switched
through.
Technische Daten
Permissible ambient temperature TU:
- Operation
- Storage
for 3TK 29.3
Degree of protection
-25 to +55 °C
-55 to +80 °C
-25 to +80 °C
IP 20
Insulation coordination to DIN VDE 0110 Part 1 and Part 2 (01.89):
Clearances in air and creepage paths: 4 kV/3
(Control circuit: 1.5 kV/3)
Rated insulations voltage
(for control circuit
Rated impulse withstand voltage
(for control circuit
Ui = 400 V
Ui = 250 V)
Uimp = 4 kV
Uimp = 1.5 kV)
Utilization category
as per DIN VDE 0660,
Part 100 (07.92)
IEC 60947-1: 1988
AC-1/AC-12
Rated
operation
voltage
Ue
Rated operating current
Ie 40 °C
6A
(Ie 55 °C)
6A
AC-15
250 V
400 V
4 A (4 A)
3 A (3 A)
DC-13
24 V
220 V
6 A (6 A)
0.5 A (0.5 A)
Rated power
AC-3
230 V
0.55 kW
0.55 kW
400 V
1.1 kW
1.1 kW
Values as per DIN IEC 60255 / VDE 0435 (09.62):
Continuous current Ith
Making capacity at:
10 A (8 A)
p.f. = 0.7 to 1
AC 230 V
10 A
(8 A)
resistive
DC 24 V
10 A (8 A)
Σ max. 30 A (Σ max. 24 A)
Short-circuit protection for signal circuit and enable circuit:
No-weld fuse protection
at short-ircuit current:
IK 1 kA
- Fuse links
Low-voltage HRC, NEOZED or
DIAZED
gL (gG)
6A
quick response
10 A
Fusing of contactor safety combination:
- M.C.B., type G
time-lag/quick-resp. 6 A
- M.C.B., type A, B, C
6A
- Protective circuit-breaker terminals
type 8 WA1011
6A
Be sure to fit the specified fuses. Otherwise safe interruption in the
event of a fault cannot be guaranteed.
For further data and Order nos. for accessories see Catalog NSK.
2


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Featured Datasheets

Part NumberDescriptionMFRS
3TK28xxThe function is Safety Integrated Application Manual. SiemensSiemens
3TK28xxThe function is (3TK28xx / 3TK29xx) Contactor Safety Combination. SiemensSiemens

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