Siemens 3TK2834 Betriebsanleitung Seite 2

Two-hand control unit
Operating Instructions
Read and understand these instructions before installing, operating, or
maintaining the equipment.
! DANGER
Hazardous voltage.
Will cause death or serious injury.
Disconnect power before working on
equipment.
Operation permissible in switchgear cabinet with degree of protection
IP54 only!
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 effec-
tiveness of the safety system by trained individuals. Siemens AG, its subsidiar-
ies and affiliates (collectively "Siemens") are not in a position to evaluate all of
the characteristics of a given system 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.
Applications
3TK2834 is suitable for installation in controls for presses.
- Hydraulic presses DIN EN 693
- Eccentric and related presses EN 692
- Screw presses EN 692.
Functions and connections
The two-hand control unit 3TK2834 possesses two release circuits in the form of
NO circuits and two signal circuits in the form of NC circuits. Five LEDs indicate
the operating status and the functions.
The release circuits are closed by simultaneous operation (< 0.5 s) of the push-
buttons S1, S2. If one pushbutton is no longer pressed, the release circuits open.
They do not close again until both pushbuttons are no longer pressed and then
simultaneously pressed again.
1. Apply the operating voltage (UB) to the terminals A1 and A2. The operating
voltage must be de-energized with the operating energy of the press.
2. Close the feedback circuit:
Connect the bridge to Y11, Y12 or NC contacts of external contactors.
3. Connect the input circuit:
Connect pushbutton S1 to terminals Y21, Y22, Y23 and
pushbutton S2 to terminals Y31, Y32, Y33.
Terminal Operating A1
assignments voltage
A2
Outputs 13, 14
23, 24
31, 32
41, 42
Inputs Y11, Y12
Y21, Y22, Y23
Y31, Y32, Y33
Cable lengths max. 1000 m 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 Safety circuit
Fig. IV: External circuit:
S1, S2 pushbuttons on two-hand control console
H1 Indicator light
K1 and K2 must be positively driven contactors
2
L/+
N/-
Release circuit 1 (NO)
Release circuit 2 (NO)
NC contact
NC contact
Feedback circuit
Pushbutton S1
Pushbutton S2
2
Total cable length for sensors and
power supply lines
DIN EN 60 439 Part 1, VDE 0660 Part 500 (04.94)
Order No.: 3ZX1012-0TK28-7CA1
Operation
LEDs
POWER S1 ON S2 ON CHANNEL 1 CHANNEL 2 Pushbutton
The unit cannot be started with the following faults:
- Short-circuit, e.g. between the pushbuttons
- Defective relay coils
- Conductor failure
- Welded contacts
The output relays do not pick up if
- the pushbuttons are not pressed simultaneously (< 0.5 s)
- only one pushbutton is pressed
- the feedback circuit Y11, Y12 is open.
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
Weight
Simultaneity between S1 and S2
Recovery time
Release time
Response time
Rated operational
Utilization category
voltage U
as per DIN VDE 0660
e
(V)
Part 200, IEC 60947-5-1
AC-15 230
DC-13 24
115
230
Continuous current I
th
Short-circuit protection
- Release circuit and Fuse links
signal circuit
Duty class
- Rated control supply voltage
The two-hand control unit is protected by an internal self-healing PTC fuse
(multifuse).
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.
Reliable functioning of the equipment is only ensured with certified components.
3TK2834
English
Operation
not activated
only S1 activated
only S2 activated
S1 and S2 activated
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
3 W/4 VA
0.85 to 1.1 x U
s
8 g/10 ms
0.45 kg
< 0.5 s
minimum 250 ms
max. 20 ms
max. 100 ms
Rated operational current I
(A)
60 °C 70 °C
6 4
6 4
0.2 0.2
0.1 0.1
6 4
DIAZED
gL(gG) 6 A / quick response 10 A
gL(gG) 2 A
e