Pizzato Elettrica Srl
via Torino, 1
36063 MAROSTICA (VI)
ITALY
e-mail: [email protected]
web site: www.pizzato.com
Phone: +39.0424.470.930
ZE FOG28A19-EU
4/12
1 INFORMATION ON THIS DOCUMENT
1.1 Function
The present operating instructions provide information on installation, connection and
safe use for the following articles:
CS AT-0•••••
,
CS AT-1•••••
.
1.2 Target audience
The operations described in these operating instructions must be carried out by quali-
fied personnel only, who are fully capable of understanding them, and with the techni-
cal qualifications required for operating the machines and plants in which the safety
devices are to be installed.
1.3 Application field
These instructions apply exclusively to the products listed in paragraph Function, and
their accessories.
1.4 Original instructions
The Italian language version is the original set of instructions for the device. Versions
provided in other languages are translations of the original instructions.
2 SYMBOLS USED
This symbol indicates any relevant additional information
Attention: Any failure to observe this warning note can cause damage or mal-
function, including possible loss of the safety function.
3 DESCRIPTION
3.1 Device description
The safety device described in this manual is defined according to the Machinery
Directive 2006/42/EC as logic component for safety functions.
The safety modules to which these usage instructions refer are devices specifically
designed and manufactured for use on industrial machines. Upon opening of at least
one channel, the safety function ensures that the safety relays open their output con-
tacts within the defined reaction time. The safety outputs of the module are enabled
only if the channels CH1 and CH2 are consistently closed and after activating the
START signal. If there is no supply voltage, the module deactivates the safety outputs
within the specified release time.
3.2 Device functions
This device is suitable for the following applications: as a module for emergency
stop, for end position monitoring with movable guards, in safety circuits up to category
3 (delayed contacts) and category 4 (instantaneous contacts) acc. to EN ISO 13849-1,
up to SIL 3 acc. to EN 62061 and up to PL e acc. to EN ISO 13849-1.
- The SIL 3 / PL e safety function is only available with the two redundant inputs
configuration.
- Input with 1 or 2 channels.
- Output contacts: 2 instantaneous NO safety contacts, 1 instantaneous NC auxiliary
contact, 2 delayed NO safety contacts (articles CS AT-0•••••). 3 instantaneous NO
safety contacts, 2 delayed NO safety contacts (CS AT-1•••••).
- Choice between automatic start, manual start or monitored start.
With reference to the "automatic" operating mode, consider RES 1.2.3 of the
Machinery Directive 2006/42/EC: "For machinery functioning in automatic mode, the
starting of the machinery, restarting after a stoppage, or a change in operating condi-
tions may be possible without intervention, provided this does not lead to a hazardous
situation".
- "Delay off" function: upon deactivation of the outputs with instantaneous contacts,
the relays of the delayed contacts are also deactivated after a fixed or adjustable
delay time.
- Connection of input channels of opposite potentials;
- Can be connected to semiconductor outputs and to magnetic safety sensors;
- Short circuit detection function of the control elements by means of safety system
with self-monitoring and redundancy;
- Indicator LEDs for the switching state of the relays with instantaneous contacts
(CH1, CH2), of the relays with delayed contacts (CH3, CH4) as well as of the supply
voltage (PWR).
- In the event of a failure, the device switches to a safe state and deactivates the
safety output.
- Without muting input, no bridging of the safety function.
- Screw terminals or plug-in terminals with screw connections or spring terminals (de-
pending on the model).
- Snap-mounting on DIN rails.
3.3 Intended use of the device
- The device described in these operating instructions is designed to be applied on
industrial machines.
- The direct sale of this device to the public is prohibited. Installation and use must be
carried out by qualified personnel only.
- The use of the device for purposes other than those specified in these operating
instructions is prohibited.
- Any use other than as expressly specified in these operating instructions shall be
considered unintended by the manufacturer.
- Also considered unintended use:
a) using the device after having made structural, technical, or electrical modifications
to it;
b) using the product in a field of application other than as described in paragraph
TECHNICAL DATA.
4 OPERATION
4.1 Operating diagram
Automatic
start:
A1/A2
S11/S12
S21/S22
31/32
47/48, 57/58
13/14, 23/24, 33/34
t
C
t
A
t
R1
t
A
t
R2
t
R1
t
R2
t
A
t
R
t
C
Monitored
start:
A1/A2
S11/S12
S21/S22
S33/S34 (START)
13/14, 23/24, 33/34
31/32
47/48, 57/58
t
MIN
t
A
t
R1
t
A
t
R2
t
R1
t
R2
t
A
t
R
Manual start:
A1/A2
S11/S12
S21/S22
S33/S34 (START)
31/32
47/48, 57/58
t
MIN
t
A
t
R1
t
R2
t
A
t
R
t
R1
t
R2
13/14, 23/24, 33/34
Legend:
t
MIN
:
Min. duration of start impulse
t
C
:
Simultaneity time
t
A
:
Response time
t
R1
:
Release time
t
R
:
Release time in absence of power
supply
t
R2
:
adjustable release time for delayed
contacts (see section TECHNICAL
DATA)
Notes: The configurations with one channel are obtained taking into consideration the
S11/S12 input only. In this case it is necessary to consider times t
R1
and t
R2
referred to
input S11/S12, time t
R
referred to the supply, time t
A
referred to input S11/S12 and to
the start, and time t
MIN
referred to the start.
4.2 Wiring diagrams
Emergency stop circuits
Input configuration with manual start
1 channel
Input configuration with manual start
2 channels
S33
S21
S22
S35
S34
A2
S31
S11
S12
A1
L / +
N / -
CS AT-0
•••••
CS AT-1
•••••
S33
S21
S22
S35
S34
A2
S31
S11
S12
A1
N / -
L / +
CS AT-0
•••••
CS AT-1
•••••
Semiconductor outputs
Input configuration with manual start
1 channel
Input configuration with manual start
2 channels
24 Vdc
+
-
OSSD
S31
S33
S21
S22
S35
S34
S12
A1
A2
CS AT-0
•••••
CS AT-1
•••••
24 Vdc
+
-
S31
S33
S21
S22
S35
S34
S12
CS AT-0
•••••
CS AT-1
•••••
A1
A2
OSSD1 OSSD2
S34
S34
Automatic start
With regard to the indicated diagrams, short-circuit the S33
and S34 terminals in order to activate the automatic start
module.
S21
S22
S21
S22
S35
S35
Monitored start
With regard to the indicated diagrams, remove the connec-
tion between the S22 and S35 terminals in order to activate
the monitored start module.
