Pilz PNOZ 2 User Manual

PNOZ 2
Operating Manual PNOZ 2
22151-EN-05
9
Legend
} Power: Supply voltage
} Start: Start circuit
} Input: Input circuit
} Output safe: Safety contacts
} Output aux: Auxiliary contact
} [1]: Automatic start
} [2]: Manual start
} a: Input circuit closes before start circuit
} b: Start circuit closes before input circuit
} t
1
: Switch-on delay
} t
2
: Delay-on de-energisation
} t
3
: Recovery time
Installation
} The unit should be installed in a control cabinet with a protection type of at least IP54.
} Use the notch on the rear of the unit to attach it to a DIN rail (35 mm).
} When installed vertically: Secure the unit by using a fixing element (e.g. retaining
bracket or end angle).
Wiring
Please note:
} Information given in the "Technical details [ 13]" must be followed.
} Outputs 13-14, 23-24, 33-34 are safety contacts; output 41-42 is an auxiliary contact
(e.g. for display).
} Auxiliary contact 41-42 shouldnot be used for safety circuits!
} Do not connect undesignated terminals.
} To prevent contact welding, a fuse should be connected before the output contacts (see
Technical details [ 13]).
} Calculating the max. cable length I
max
in the input circuit with unit types 24 VAC and 42
VAC:
R
lmax
R
l
/ km
I
max
=
R
lmax
= max. overall cable resistance (see Technical details [ 13])
R
l
/km = cable resistance/km
} Calculating the max. cable length I
max
in the input circuit with unit types 110 VAC and
230 VAC:
C
C
C
lmax
= max. overall cable capacitance (see Technical details [ 13])
C
l
/km = cable capacitance/km

Pilz PNOZ 2 Specifications

General

Brand	Pilz
Model	PNOZ 2
Category	Relays
Language	English