pizzato FG D D V70V90 Serie Manual Del Usuario página 6

To operate and open the door/guard:
- Insert the triangular key and turn it clockwise by 180°.
- Do not force the key beyond 180°.
- The emergency unlocking key must only be available to
the maintenance engineer and kept in a secluded place.
- Never leave the unlocking key inserted in the device
during normal system operation.
4.5.2 Unlocking with mushroom button
If necessary, the locking device can also be equipped with an emergency unlocking
device with mushroom button to enable unlocking of the door/guard from the inside.
To actuate, simply press. The button has a bistable design: it must be reset upon leav-
ing the hazard area before the system can be put back into operation.
To limit space requirements on the inside, the unlocking mechanism can be reduced
to the actuation rod without the mushroom cap.
To access the unlocking device from the well, an inspection flap can be provided
in the well.
4.6 Electrical connections of the device
Attention: the safety circuit must be connected to the NC safety contacts. The
auxiliary contacts NO must be used for signalling only (see paragraph OPERATION).
Contact 1 Contact 2
Contact 3 Contact 4
The solenoid for unlocking must be powered via the A1/A2 inputs with the power
supply voltage required for the different versions of the device (see paragraph TECH-
NICAL DATA).
To open the device cover, use a PH2 cross-head screwdriver; once operations are
completed, tighten the screws to a torque between 0.8 and 1.2 Nm.
The fixing screws of the cover are captive, i.e., they remain in the cover holes
if the cover is opened.
4.7 State signalling LEDs
Items with code FG 6••••••A are supplied with two green LEDs to show from the
outside of the device the solenoid supply state. Electrical wiring is not necessary.
On request, versions with 2 LEDs of a different colour each are available to indicate
the state of the contacts (red and green for articles FG 6••••••B, orange and green
for articles FG 6••••••C). For these versions, the LEDs are supplied by two wires to
be connected between the selected contacts and the A1 supply terminal.
LED1
LED2
On request
Wires for connecting
the contacts to be
displayed
5 OPERATION
5.1 Definitions
The structure of these devices allows them to operate in three different states (see
table 1), i.e.:
- state A : with inserted and locked actuator
- state B : with inserted but not locked actuator
- state C : with extracted actuator
All or some of these states can be monitored by means of electrical NC contacts with
positive opening by selecting the appropriate contact block for the article. In particular,
electric contacts that are identified by the solenoid symbol (
transitions between state A and state B (and vice versa), while the electric contacts
identified by the actuator symbol (
B and state C (and vice versa).
When the device is in C state, any activation or deactivation of the solenoid does not
influence the contacts' position of the solenoid itself (
All NC contacts of these devices are with positive opening and can be used for safety
circuits whereas NO contacts are normally used for signalling (see table 2). The locked
position of the actuator secured to the door is signalled by NC contacts with positive
opening. Table 2 shows the device contacts in state A.
6.1 Installation
The following instructions are generally to be observed when installing the locking
device:
- Tighten the fixing screws of electrical conductors to a torque from 0.6 to 0.8 Nm.
- Do not stress the device with bending or torsion.
- Do not modify the device for any reason.
- Do not exceed the tightening torques specified in the present manual.
- The device carries out a protection function. Any inadequate installation or tampering
can cause serious injuries and even death, property damage, and economic losses.
- These devices must not be bypassed, removed or disabled in any other way.
- If the machine where the device is installed is used for a purpose other than that
specified, the device may not provide the operator with efficient protection.
- The safety category of the system (according to EN ISO 13849-1), including the lock-
ing device, also depends on the external components connected to it and their type.
- Before installation, make sure the device is not damaged in any part.
- Before installation, ensure that the connection cables are not powered.
- Avoid excessive bending of connection cables in order to prevent any short circuits
or power failures.
- Do not paint or varnish the device.
- Do not drill the device.
- Do not use the device as a support or rest for other structures, such as raceways,
sliding guides or similar.
Contacts to show
- Before commissioning, make sure that the entire machine or lift complies with all
applicable standards and EMC Directive requirements.
- The fitting surface of the locking device must always be smooth and clean.
- The documentation required for correct installation and maintenance is available on-
line in various languages on the Pizzato Elettrica website.
- Should the installer be unable to fully understand the documents, the product must
LED 1 A1
not be installed and the necessary assistance may be requested from the manufac-
turer (see paragraph SUPPORT).
- After installation, check for correct functioning of the emergency unlocking device
with triangular key.
A2
LED 2
- No work that can cause high-intensity electrostatic discharges (e.g. stripping or rub-
bing plastic surfaces or other materials that can be electrostatically charged) may be
carried out in the vicinity of devices that are supplied with electrical energy, even if
they are switched off or not wired.
- Always attach these operating instructions to the manual of the machine or lift in
which the locking device is installed.
- These operating instructions must be kept available for consultation at any time and
for the whole period of use of the locking device.
- Keep dirt from depositing or collecting in the entry hole of the locking device for the actuator.
6/24
Operating principle D (solenoid normally de-energised)
Operating state State A
Inserted and locked Inserted and released
Actuator ( )
De-energised
Solenoid ( )
Contacts
Contacts activated
activated by the
Articles by the solenoid
actuator
1NO+1NC 1NO+1NC
FG 60A•••••
33-34 21-22 43-44 11-12
2NC 1NO+1NC
FG 60B•••••
11-12 21-22 43-44 31-32
3NC 1NC
FG 60C•••••
11-12
21-22 41-42
31-32
1NO+1NC 2NC
FG 60D•••••
13-14 21-22 31-32 41-42
1NO+2NC 1NC
FG 60E•••••
11-12
43-44 31-32
21-22
6 INSTRUCTIONS FOR PROPER USE
) are switched in the
) are switched in the transitions between state
).
State B State C
Extracted
Energised Indifferent
Table 1
Contacts
Contacts activated
activated by the
Articles by the solenoid
2NC
FG 60G•••••
11-12 21-22 31-32
2NO+1NC
FG 60L•••••
33-34
21-22
43-44
1NC
FG 60P•••••
11-12
31-32
41-42
1NC 2NO+1NC
FG 60S•••••
33-34
11-12
43-44
1NC 1NO+2NC
FG 60T•••••
11-12 43-44
Table 2
actuator
2NC
41-42
1NC
11-12
3NC
21-22
21-22
21-22
31-32