Datasheet

Relays for functional safety
Safety relays PNOZsigma
PNOZ s20
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]
2016-09
795
Expansion options
Consider the max. power consumption of all the
units used in the application
[1]: Base unit PNOZsigma
[2]: One contact expansion module PNOZs7.1 and
up to 9 contact expansion modules PNOZs20
[3]: Contact expansion module PNOZ s7.1
[4]:* Up to 10 contact expansion modules PNOZs7.2
(final block with terminator)
[1]
[2] [3]
[4]
PNOZsigma base unit
PNOZsigma expansion
module s7.1
PNOZsigma expansion
module s7.1
PNOZsigma expansion
module s20
PNOZsigma expansion
module s7.2
PNOZsigma expansion
module s7.2
[1]: Base unit PNOZsigma
[2]: One contact expansion module PNOZs7.1 and
up to 9 contact expansion modules PNOZs7.2
[3]: Contact expansion module PNOZ s7.1
[4]*: Up to 10 contact expansion modules PNOZs20
(final block with terminator)
[1]
[2] [3]
[4]
PNOZsigma base unit
PNOZsigma expansion
module s7.1
PNOZsigma expansion
module s7.1
PNOZsigma expansion
module s7.2
PNOZsigma expansion
module s20
PNOZsigma expansion
module s20
*) Alternatively, one of the following units can be used as the final expansion block:
} PNOZ s7
} PNOZ s8
} PNOZ s9
} PNOZ s10
} PNOZ s11
These units sometimes require more power than the units combined in the table. If the
maximum power consumption of all expansion modules is exceeded (see the technical de-
tails of the respective devices), you will need to reduce the number of connected PNOZ s20
or PNOZ s7.2 units.
Example:
Use of PNOZ s10 with a power consumption of 3 W
The max. number of expansion modules PNOZ s20 or PNOZ s7.2 is reduced by 2:
} 1 unit, in order to comply with the max. power consumption and
} 1 unit, which is replaced by PNOZ s10