Pilz 20 748-03, PSS SB CPU, PSS SB 3006 DP-S, PSS SB 3006 CN-A, PSS SB 3006 IBS-S Operating Manual
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Programmable Safety Systems
PSS-Range
PSS SB ACTIVE JUNCTION BASIS
Operating Manual
Item No. 20 748-03
2 Operating Manual: PSS SB ACTIVE JUNCTION BASIS
Contents
Function description 3
Intended use 5
Safety 6
EMCD 6
ESD 6
Warranty and liability 6
Safety guidelines 6
Disposal 6
Bus structure with PSS SB ACTIVE JUNCTION BASIS 7
Rules for incorporation 7
Rules for bus termination 7
Determining the bus cable runs and transmission rate 8
SafetyBUS p interfaces 9
SafetyBUS p main branch 9
SafetyBUS p sub branches 9
Installation 10
Supply voltage 11
Insulation voltage test 11
Connection 12
Connecting the supply voltage 12
Earthing 12
Main branch 12
Sub branches 12
Display elements 14
Faults 14
Technical details 15
3
Operating Manual: PSS SB ACTIVE JUNCTION BASIS
Function description
The PSS SB ACTIVE JUNCTION BASIS is a component part of the Pilz Active
Junction. An Active Junction consists of a base unit (PSS SB ACTIVE
JUNCTION BASIS) and up to two expansion modules (PSS SB ACTIVE
JUNCTION EXPANSION).
An Active Junction operates as an active junction with repeater function and is
designed for use in SafetyBUS p networks. It galvanically isolates up to 6 sub
branches from the SafetyBUS p main branch. The Active Junction can be used to
connect physically remote field devices to the SafetyBUS p main branch. The
field devices may be in either an IP20 or IP67 environment.
Fig. 1: Elements on the PSS SB ACTIVE JUNCTION BASIS (front view)
If the field devices are in an IP67 environment, the supply voltage for the field
devices can be provided via the Active Junction. In this case, special bus cable
will be required. This is designed for an IP67 environment and contains the lines
for the supply voltage for the field devices as well as the data lines. The
maximum extension of a sub branch is limited by a number of different factors
(number of bus subscribers in the sub branch, transmission rate, current
consumption of the connected field devices etc.).
The base unit PSS SB ACTIVE JUNCTION BASIS is designed for the formation
of two sub branches. If more than two sub branches are required, the expansion
module PSS SB ACTIVE JUNCTION EXPANSION can be used. It is possible to
connect a max. of two expansion modules. Each expansion module can be used
to connect two additional sub branches via the base unit to the SafetyBUS p main
branch.
Power
Traffic
Supply
Traffic
Supply
Sub-Br.Sub-Br.
1
2
ACTIVE JUNCTION
CAN_L
GND
CAN_H
VCC
1... ...4
-X1-
-X2-
1... ...4
-X3-
-X4-
SHIELD
1... ...4
-X5-
Note:
1... ...4
-X0-
24V
0V
BASIS
6
7
8
4
3
2
1
5
5
1: Supply voltage terminal
2: Display elements sub
branch 1
3: Display elements sub
branch 2
4: SafetyBUS p interfaces
(sub branches)
5: Element for attaching an
expansion module
6: Functional earth
connection
7: SafetyBUS p interface
(main branch)
8: Terminals for connecting
the cable screening
4 Operating Manual: PSS SB ACTIVE JUNCTION BASIS
I/OD
I/OD
MD
LD
PSS SB ACTIVE JUNCTION BASIS
main branch
sub branch (2)sub branch (1)
IP20
or
IP67
drop line
IP20
1 1
2
3
3 3
4 4 4
5
1 Terminating resistor in
the main branch
(terminator)
2 Terminating resistor for
each sub branch of the
Active Junction
(integrated into the unit)
3 Field devices
4 T-connectors
5 Terminating resistor for
the sub branch
(terminator)
Fig. 2: Bus structure with PSS SB ACTIVE JUNCTION BASIS (principle)
The Active Junction is one of the non-safety-related devices on SafetyBUS p. It
is not assigned a Device Address. Although the Active Junction is not registered
as a bus subscriber, it must be regarded as a bus subscriber when establishing
the transmission rate.
If there is a short circuit in the supply voltage to a sub branch near to the Active
Junction (up to ca. 10 m cable runs), the supply voltage to the sub branch will be
switched off. The “Supply” LED for the relevant sub branch will turn red (see
sections entitled “Display elements” and “Faults”).
If a signal error occurs within a sub branch (permanent dominant signal level),
the sub branch will be ignored. The “Traffic” LED for the relevant sub branch will
turn red (see sections entitled “Display elements” and “Faults”).
5
Operating Manual: PSS SB ACTIVE JUNCTION BASIS
Intended use
The PSS SB ACTIVE JUNCTION BASIS is designed for use in SafetyBUS p
networks. It is suitable for connecting physically remote field devices (e.g. light
guards) to the SafetyBUS p main branch. Using the unit allows you to build a star
or tree structure, rather than the linear topology specified for SafetyBUS p.
If the field devices are in an IP67 environment, suitable cable and connection
materials must be used. The information in the guideline: “SafetyBUS p - IP67
Physical Layer Concept”, published by the SafetyBUS p Club International e.V.,
is binding.
Precise details on the PSS SB ACTIVE JUNCTION BASIS are provided in the
“Technical details” section. Use of the device outside the specifications given
here will be deemed as improper use. Any component, technical or electrical
modifications will be deemed as improper use.
Use of the PSS SB ACTIVE JUNCTION BASIS outside the areas described in
this manual will be deemed as improper use. Intended use includes following the
information in this documentation.
NOTICE
SafetyBUS p subscribers in the following table only support the PSS SB ACTIVE
JUNCTION BASIS from the stated version number onwards:
Table 1
From version
3.0
2.0
2.0
2.0
1.7
2.0
2.0
SafetyBus p module
PSS SB CPU
PSS SB 3006 CN-A
PSS SB 3006 DP-S
PSS SB 3006 IBS-S
PSS SB DI8O8
PSS SB DI16
PSS SB Router1
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