2
Operating instructions
Passive fieldbox
PFB-SD-4M12-SD
EN
1.6 Warning about misuse
In the event of improper or unintended use or tampering, use
of the passive fieldbox could expose persons to danger or
cause damage to the machine or system components.
1.7 Exclusion of liability
We shall accept no liability for damages and malfunctions resulting from
defective mounting or failure to comply with this operating instructions
manual. The manufacturer shall accept no liability for damages
resulting from the use of unauthorised spare parts or accessories.
For safety reasons, invasive work on the device as well as arbitrary
repairs, conversions and modifications to the device are strictly
forbidden; the manufacturer shall accept no liability for damages
resulting from such invasive work, arbitrary repairs, conversions and/or
modifications to the device.
2. Product description
2.1 Ordering code
This operating instructions manual applies to the following types:
PFB-SD-4M12-SD
Option
Description
PFB
Passive fieldbox
SD
Evaluation side: SD interface
4M12
4 device connectors for M12 connector
SD
Device connection: SD interface
2.2 Destination and use
The passive fieldbox PFB-SD-4M12-SD is designed for the connection
of 4 electronic safety relays in SD interface version of the manufacturer
SCHMERSAL. It serves to connect up to 4 safety switchgear units in
series.
In order to increase the safety function, it is possible to connect multiple
passive fieldboxes in series.
The secure OSSD outputs of the connected safety relays are switched
in series and wired to a compatible security analysis by the passive
fieldbox PFB-SD-4M 12-SD.
The non-secure SD interface signals of the devices are connected in
series and wired to an SD Gateway.
The user must evaluate and design the safety chain in
accordance with the relevant standards and the required
safety level.
2.3 Technical data
Standards:
IEC 60947-1
Materials:
- Enclosure:
polyamide / PA 6 GF
- Inspection window:
polyamide / PACM 12
- Encapsulation:
polyurethane / 2K PU
- Labelling plates:
polycarbonate / PC
Mechanical data
Type of electrical connection:
Panel jack / integrated socket
Connection:
- Connectors:
M12 / 8-pole, A-coded
- Power:
M12-Power / 4-pole, T-coded
- IN & OUT signals:
M12 / 4-pole, A-coded
Tightening torque of connectors:
- M12 connector:
max. 1.5 Nm
- Recommended for SCHMERSAL cables:
1.0 Nm
Fixing screws:
2x M6
Tightening torque of the fixing screws:
max. 3.0 Nm
Ambient conditions
Ambient temperature:
−20 °C … +65 °C
Storage and transport temperature:
−25 °C … +70 °C
Relative humidity:
10 % … 95 %, non condensing
Resistance to shock:
30 g / 11 ms
Resistance to vibration:
5 … 10 Hz, amplitude 3.5 mm;
10 … 150 Hz, amplitude 0.35 mm / 5 g
Protection class:
IP67 to IEC 60529
Protection class:
III
Insulation values to IEC 60664-1:
- Rated insulation voltage Ui:
32 VDC
- Rated impulse withstand voltage U
imp
:
0.8 kV
- Over-voltage category:
III
- Degree of pollution:
3
Electrical data
Supply voltage U
B
:
24 VDC -15% / +10%
(stabilised PELV mains unit)
Rated operating voltage U
e
:
24 VDC
Operating current I
e
:
- Fieldbox (external fuse protection required):
10 A
- Derating M12 Power connector:
10 A to 55 °C
7 A to 65 °C
- Device connection:
0.8 A
(internal protection available)
- Safety outputs Y1 and Y2:
0.1 A
Device connection line fuse:
Automatically resetting
fuse element 1.5 A
LED indications
1 green LED „Pwr“:
Supply voltage fieldbox
4 green LED "P":
Fuse-element device connection 1 - 4
4 yellow LED "I“:
Input safety enable device connection 1 - 4
Protection class IP67 is only reached if all M12 connectors
and blanking plugs, as well as the inspection window are
properly fastening with screws.
All fieldboxes have a good resistance against chemicals
and oil. When used in aggressive media (.e.g chemicals,
oils, lubricants and coolants in high concentrations) the
material resistance must in each case be checked in
advance for the specific application.
