Siemens 3TK2835 Instrucciones De Servicio página 3

6 S1 and S2 are operated at the two-hand control console. Two-hand control unit
3TK2834 outputs enable signal. K3 and K4 pick up.
7 Plunger moves downwards. S3 is no longer operated.
8 Test cam is reached. S4 is operated. K3 drops out.
9 Plunger moves. S4 is no longer operated (is overtravelled).
K3 picks up.
10 S1 and S2 are no longer operated. K3 and K4 drop out.
11 S1 and S2 are operated. K4 picks up again.
Overtravel distance tester is inhibited.
Connections
Terminal Operating A1
assignments voltage
A2
Outputs 13, 14
23, 24
33, 34
41, 42
Inputs Y11, Y12, Y13, Y14
Y21, Y22
Y31, Y32, Y33, Y34
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 Safety circuit
Fig. IV: External circuit:
3TK2834 Two-hand control unit
S0 Main switch
S1, S2 keys on two-hand control console
S3 Position switch for top dead centre
S4 Position switch for test cam
S5 Hydraulic pump "ON"
S6 Tool "up" (manual mode)
K1 Contactor for hydraulic pump
K2 Tool "up"
K3, K4 Tool "down"
H1 Indicator light
Fig. V: Function scheme
Fig. VI: Sequence chart
Operation
Sequence of operations after the press has been switched on:
1. Switch on the hydraulic pump with S5, move plunger to top dead centre, if
necessary by means of S6.
2. Operate S1, S2 on the two-hand control console until the position switch for
test-cam (S4) opens.
3. No longer operate S1, S2.
4. Operate S1, S2 again: Indicator light H1 lights up if the overtravel distance is
OK.
5. No longer operate S1, S2: The plunger returns to top dead centre.
6. If overtravel distance is OK, all outputs remain active until the control
voltage is switched OFF.
LEDs Operation
POWER RELEASE
Overtravel distance OK
Overtravel distance incorrect or test not yet performed
Fault
If the cam overtravels position switch S4, indicator light H1 does not light up.
The hazardous part of the machine can be moved up to top dead centre only by
means of S6.
The press can no longer be used for production. When this happens,
notify the maintenance staff that the press needs attention.
L/+
N/-
Release circuit (tool down)
NO contact (tool up)
NO ct (overtravel distance OK)
NC contact (hydraulic pump ON)
Feedback circuit (K4)
Position switch (S4)
Top dead centre switch (S3)
2
Total cable length for sensors
and power supply lines
Technical Data
Permissible ambient temperature T u
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
Response/release time
Utilization category Rated operational
voltage U
as per DIN VDE 0660
e
Part 200, IEC 60947-5-1 (V)
AC-15 230
DC-13 24
115
230
Continuous current I
th
* Release circuit 13/14 reduced current values
Short-circuit protection
- Release circuit and Fuse links
signal circuit
Duty class
- Rated control supply voltage
The overtravel distance tester 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 NS K.
-25 to +60 °C/-40 to +80 °C
IP 20
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
0.5 kg
max. 50 ms
Rated operational current I
(A)
60 °C 70 °C
5/3* 4/3*
5/2* 4/2*
0.2 0.2
0.1 0.1
5 4
-
DIAZED
gL(gG) 6 A / quick response 10 A
gL(gG) 2 A
e
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