ABB C575 Application Information

Application examples

C575

Electronic

Safety relays

7

Application

C 575 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 C 575 possesses two release circuits (safety outputs)
confi gure as NO contacts and two signal outputs confi gured as NC contacts. Five
LEDs indicate the operating status and the functions.

The safety outputs are closed by simultaneous operation (< 0.5s)
of the push-buttons S1, S2. If one pushbutton is no longer pressed, the outputs
open. They do not close again until both pushbuttons
are no longer pressed and then simultaneously pressed again.

1. Operating voltage to be applied to the terminals A1 and A2.
The operating voltage must be de-energized with the operating
energy of the press.

2. Feedback loop to be closed:
Y11, Y12 to be jumperd or connected to the NC contacts of
external contactors.

3. Input circuits to be connected:
Pushbutton S1 to terminals Y21, Y22, Y23 and
pushbutton S2 to terminals Y31, Y32, Y33.

Terminal marking

Supply voltage A1 L/+
A2 N/-

Outputs 13, 14 Safety output 1 (n/o contact)
23, 24 Safety output 2 (n/o contact)
31, 32 n/c signal output
41, 42 n/c signal output
Inputs Y11,12 Feedback loop
Y21, 22, 23 Pushbutton S1
Y31, 32, 33 Pushbutton S2

Operation

LEDs Operation

POWER S1 ON S2 ON Channel 1 Channel 2 Pushbutton

non activated

only S1 activated

only S2 activated

S1 and S2 activated

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 does not enegize if:

• The pushbuttons are not pressed simultaneously (< 0.5s)

• Only one pushbutton is pressed

• The feedback loop Y11, Y12 is open.

Cable length

max. 1000m for 2 x 1.5mm
and power supply lines)

External circuit S1, S2 pushbuttons on two-hand control console,
H1 indicator light, K1and K2 must be positively guided contactors,

Safety category 4 acc.to EN 954-1

L/+

2

(Total cable length for sensors

L/+

7

Internal circuit

K1K2S1

A1

A2

Y11 Y12 13 23 4131

Y21 Y22 Y23

2

1

3

J

Y31 Y32 Y33

4

5

6

14 24 4232

C575

A2

N/-

13 23A1 31 41Y22Y23Y12 Y21Y11

K1

K2

M

Y32Y31

14 24

32 42

Y33

S2

N/-

K2K1 H1

Low Voltage Products & Systems 7.45

AC 1000 - 11/03