Siemens 3TK2827 Betriebsanleitung Seite 2

Safety Combination
Instructions
! WARNING
HAZARDOUS VOLTAGE.
Can cause electrical shock
and burns.
Disconnect power before proceeding
with any work on this equipment.
The devices must be installed in a switchgear cabinet with the IP32, IP43
or IP54 degree of protection, depending on the ambient conditions.
IMPORTANT NOTICE
The products described herein are designed to be components of a customized
machinery safety-oriented control system. A complete safety-oriented system
may include safety sensors, evaluators, actuators and signaling components. It is
the responsibility of each company to conduct its own evalution of the effecti-
veness of the safety system by trained individuals. Siemens AG, its subsidiaries
and affiliates (collectively "Siemens") are not in a position to evaluate all of the
characteristics of a given machine or product or machine not designed by
SIEMENS.
Siemens accepts no liability for any recommendation that may be implied or
stated herein. The warranty contained in the contract of sale by Siemens is the
sole warranty of Siemens. Any statements contained herein do not create new
warranties or modify existing ones.
Application
You can use the safety combinations 3TK2827/28 in EMERGENCY STOP devices
as per EN 418, in safety circuits as per and/or EN 60 204-1 (11.98), such as for
monitoring safety guards, or in circuits with controlled standstill requirement
(STOP Category 1). Depending on the external circuitry, you can use this device to
install Safety Category 4 instantaneous release circuits and Safety Category 3
delayed release circuits according to DIN EN 954-1.
Functions and connections
The 3TK2827/28 safety combinations possesses two delayed and two instanta-
neous release circuits as NO circuits and one instantaneous signal circuit as NC
circuit. Five LEDs indicate the operating status and the functions.
The redundant safety relays, the electronics and the operated motor contactors
are tested for proper functioning when the EMERGENCY STOP button or the limit
switch button is unlatched, and when ON circuit Y33, Y34 is closed.
On the 3TK2827 (monitored start), the ON circuit Y33, Y34 is checked for short-
circuit. This means that a fault ist detected when Y33, Y34 is closed before the
EMERGENCY STOP button is closed.
Terminal Operating voltage A1
assignments
The PE terminal should only be
connected if ground fault monitoring is
required.
Output
Function 3TK2827
1-channel ON pushbutton
at Y33, 34
2-channel
2
Cable lengths for 2 x 1.5 mm
Figures Fig. I: Dimension drawings (dimensions in mm)
Fig. II: Installation / Cage Clamp
Fig. III: Internal circuit: ¿ power pack, À PTC fuse,
Á control logic, Â Channel 1, Ã Channel 2
Ä Channel 1 (t), Å Channel 2 (t)
3TK2827, Monitored start for EMERGENCY STOP
Fig. IV: Safety category 2
2
L/+
A2 N/–
Follow connection notes
PE given in Fig. VIII!
13, 14 Release circuit 1, instantaneous
23, 24 Release circuit 2, instantaneous
31, 32 Signal circuit, instantaneous
47, 48 Release circuit 1, delayed (t)
57, 58 Release circuit 2, delayed (t)
3TK2827 / 3TK2828 3TK2828
Jumper from Y11 to Y12 Feedback circuit
Jumper from Y21 to Y22 or Jumper to
EMERGENCY STOP circuits Y33, Y34.
at Y10, Y11
Jumper from Y10 to Y11
EMERGENCY STOP circuits
at Y11, 12 and Y21, 22
max. 1000 m (total length for sensors)
Order No.: 3ZX1012-0TK28-5CA1
Fig. V: Safety category 3
3TK2828, Autostart for Guard door monitoring
Fig. VI: Safety category 2
Fig. VII: Safety category 3
Operation
LEDs
POWER Ch1 Ch2 Ch1 Ch2
(t) (t)
Technical data
Permissible ambient temperature T
Operation/storage
Degree of protection to EN 60 529
Rated insulation voltage U
i
Rated impulse withstand voltage U
Rated control supply voltage U
s
Rated power
AC/DC operating range
Shock resistance (half-sine) as per IEC 60068 8 g/10 ms
Weight
Recovery time after
EMERGENCY STOP
Release time after EMERGENCY STOP
Response time
Utilization category Rated operational
as per IEC 60947-5-1 voltage U
e
(V)
AC-15 230
DC-13 24
115
230
Continuous current I
th
Short-circuit protection
Signal circuit and Fuse links
release circuit Duty class
Control supply voltage
Be sure to fit the specified fuses. Otherwise safe interruption in
the event of a fault cannot be guaranteed.
For further data and accessories see Catalog NS K.
Reliable functioning of the equipment is only ensured with certified compoents.
3TK2827, 3TK2828
IEC 60-439-1, (08.00)
English
Operation
PS EMERGENCY ON Release circuits
STOP
ON not activated activated closed
activated, delay not open
time elapsed activated
not activated not open
activated
activated, delay not FK 1 & 2 open,
time elapsed activated FK 1 (t) & FK2 (t)
closed
Faults
• Relay fusion-welded open
• Motor contactor fusion-welded
• Defect in electronics
• Short-circuit in ON circuit
Cross or ground faults in EMER-
GENCY STOP circuit (min. fault
current I = 0.5 A; PTC fuse trips)
Kmin
or supply voltage missing.
u
25 to +60 °C/ 40 to +80 °C
– –
IP20
300 V
4 kV
imp
24 V DC, 24 V AC, 115 V AC, 230 V AC
5 W/5 VA
0.85 to 1.1 x U
s
0.580 kg
Restart only possible after this
time elapses!
0.05 to 3 s or 0.5 to 30 s adjustable
max. 80 ms
Rated operational current I
on loading of instantaneous / delayed
release circuits (A)
60 °C 70 °C
5/3 4/3
5/2 4/2
0.2/0.2 0.2/0.2
0.1/0.1 0.1/0.1
5/5 4/4
DIAZED
gL(gG) 6 A / quick response 10 A
gL(gG) 2 A
e