2
Operating instructions
Position switch with safety function
Z/T 235/236 AS
Z/T 256 AS
EN
1.6 Warning about misuse
In case of improper use or manipulation of the safety
switchgear, personal hazards or damages to machinery
or plant components cannot be excluded when safety
switchgear is used The relevant requirements of the
standard ISO 14119 must be observed
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:
➀➁
2
➂➃
➄
-AS
No. Option
Description
➀
Z
Snap action A
T
Slow action A
➁
Actuator selection refer to main catalogue "Safety Technology"
➂
3
slim design
5
large design
➃
5
Metal enclosure
6
Thermoplastic enclosure
➄
ST
M12 x 1 connector
FK
Flat cable connection
Construction form 256
STR
M12 connector at the right-hand side
STL
M12 connector at the left-hand side
FKR
Flat cable connection, at the right-hand side
FKL
Flat cable connection, at the left-hand side
Only if the information described in this operating instructions
manual are realised correctly, the safety function and therefo-
re the compliance with the Machinery Directive is maintained
2.2 Special versions
For special versions, which are not listed in the order code below 21,
these specifications apply accordingly, provided that they correspond to
the standard version
2.3 Destination and use
The safety switch is suitable for hinged or sliding guards, which need
to be closed in order to provide for the necessary operational safety
The combination of the safety switch and the AS-i ASM safety monitor
provides a safe monitoring of the condition of the corresponding safety
guard
The safety function consists in safely switching off the code
transmission when the safety guard is opened and maintaining the safe
switched off condition for as long as the safety guard is open
An AS-Interface Safety at Work component functions on the basis of
an individual code generator (8 x 4 bit) This safety code is cyclically
transmitted over the AS-i network and monitored by the ASM safety
monitor
The component status can be evaluated through a PLC with AS-
Interface master The safety-related functions are enabled by means of
the AS-i safety monitor
The user must evaluate and design the safety chain in ac-
cordance with the relevant standards and the required safety
level
The entire concept of the control system, in which the safety
component is integrated, must be validated to the relevant
standards
2.4 Technical data
Standards:
IEC 60947-5-1, EN 62026-2,
ISO 13849-1, IEC 61508
Design:
fixings to EN 50047
Enclosure:
235: zinc die-cast, enamel finish
236, 256: glass-fibre reinforced thermoplastic, self-extinguishing
Switching system:
Slow action or snap action,
positive break NC contact
A
Mechanical life:
≥ 1 million operations
Switching frequency:
max 5000/h
Max Actuating speed:
1 m/s
Response time:
< 100 ms
Termination:
235: connector M12, 5 pole, or FK
236: connector M12, 4 pole, or FK
256: connector M12, 4 pole, or FK
Electrical data - AS-Interface:
AS-i supply voltage:
18,0 … 31,6 VDC through AS-Interface,
reverse polarity-proof (stabilised PELV units)
AS-I power consumption:
≤ 0,05 A
AS-i Device insulation:
internal short-circuit proof
AS-I specification:
Version:
V 30
Profile:
S-0BFF
IO-Code:
0x0
ID-Code:
0xB
ID-Code 1:
0xF
ID-Code 2:
0xF
AS-interface inputs:
- Channel 1:
DI 0 / DI 1 = dynamic code transmission
- Channel 2:
DI 2 / DI 3 = dynamic code transmission
AS-interface outputs:
- DO 0 … DO 3:
no function
AS-Interface parameter port:
- P0:
Channel 2 switched
- P1 … P3:
no function
Input module address:
0,
preset to address 0,
can be changed through AS-interface bus master
or hand-held programming device
LED switching conditions display:
LED yellow:
Channel 1, SaW-Bit 0,1
LED green-red (AS-i Duo LED):
AS-Interface supply voltage /
AS-Interface communication error or slave address = 0
or periphery error detected
LED yellow:
Channel 2, SaW-Bit 2,3
Ambient conditions:
Protection class:
IP67
Ambient temperature:
−25 °C … +60 °C
Storage and transport temperature:
–25 °C … + +85 ºC
Relative humidity:
30% … 95%, no condensation,
no icing
Resistance to vibration:
10 … 150 Hz (0,35 mm / 5 g)
Resistance to shock:
30 g / 11 ms
Protection rating
: II
X
(only 236, 256);
Overvoltage category:
III
Degree of pollution:
3
Rated impulse withstand voltage U
imp
:
800 V
Rated insulation voltage U
i
:
32 VDC
Only for use in Pollution Degree 2 Environment For use
in NFPA 79 Applications only Adapters providing field
wiring means are available from the manufacturer Refer
to manufacturer’s information
