Pilz P1HZ 2V Data Sheet

Two-hand Relays

EN 574, Type IIIA

P1HZ 2V

Two-hand relay in accordance with
VDE 0113-1, 11/98, EN 60204-1,
12/97 and IEC 204-1, 11-98

Features

● Conforms to EN 574, Type IIIA
with partial fail to safety and in
accordance with EN 954,
Category 1

Approvals

Technical Details P1HZ 2V

Electrical Data

Supply Voltage AC: 24, 42, 110, 120, 230 V

DC: 24 V
Tolerance 85 ... 110 %
Residual Ripple DC Max. 20 %
Power Consumption Approx. 4 VA/2 W
Voltage and Current at the 24 VDC, 40 mA
Input Circuits 1/2
Switching Capability in accordance with
EN 60947-4-1, 01/00 AC1: 240 V/6 A/1500 VA

DC1: 24 V/1,5 A/40 W
EN 60947-5-1, 08/00 (DC13: 6 cycles/min.) AC15: 230 V/2.5 A; DC13: 24 V/1.5 A
Output Contacts 2 safety contacts (N/O)
Contact Fuse Protection 6 A quick or 4 A slow
(EN 60947-5-1, 08/00)

Times

Delay-on Energisation (EN 574) 10 ms
Delay-on De-energisation Approx. 30 ms
Simultaneity channel 1/2 Max. 500 ms

Mechanical Data

Torque Setting on Connection Terminals 1.2 Nm (screws)
Maximum Cross Section of 2 x 2.5 mm
External Conductors Single-core or multi-core with

crimp connectors
Dimensions (H x W x D) 75 x 45 x 115 mm
Weight AC: 380 g, DC: 280 g

Description

2

3

P1HZ 2V

●

●

● 45 mm, P-75-housing, DIN-Rail

mounting

● Positive-guided relay outputs:
2 safety contacts (N/O)

● Increase in the number of
safety contacts available by
connecting expander modules.

Function Description

The two-hand relay is not suitable for
use as the primary safety device on
mechanical and hydraulic presses or
in safety circuits for type IIIC
applications. For such applications
we recommend using the P2HZ 5 or
P2HZ X1.
A cycle can only be initiated by
pressing the two pushbuttons
simultaneously. A cycle is interrupted
by releasing one or both buttons to
stop the output.
The output signal can only be
reinitiated after both inputs have
been released and the pushbuttons
are operated again.

NSG-D-2-082-2008-10

Two-hand Relays

EN 574, Type IIIA

P1HZ 2V

3

Internal Wiring Diagram

Feedback

U

B

control loop

A2

A1

(L-)

(L+)

T1

~

G1

=

+

Function Diagram

1

U

B

0

Output

1
0

1
0

1
0

1
0

1
0

Input circuit 1

Input cirucit 2

Simultaneity

Feedback
control loop

3231

tg

Input circuit 1

11

(6)

(1)

Switch-on delay/
Cycle test

Channel 1

K2K1

(2)

Input circuit 2

Channel 2

(3)

● Increase in safety contacts
The number of output contacts can

Safety
contacts

2412 21

33 43

K1

K2

34 44

tg
(5)

(4)

be increased by using expander
modules or relays/contactors with
positive-guided contacts.

1L1

(1L+)

F2

33

34

K3 K4

1L2

(1L-)

K3

31 32

K4

No significance
Feedback control loop open: 0
Feedback control loop closed: 1

(1): Normal working cycle
(2): Fault: feedback control loop not closed

at least 0.5 s before input circuit 1/2

1L1

(1L+)

F1

S1

1L2

(1L-)

A1

33

(+)

44

34

S2

12

11

43

31

32

A2

24

21

(-)

(3): Fault: difference in

input circuit 1/2 > t

(4): Fault:input circuit

1/2 closed before U

(5): Fault: feedback control loop not

open before cycle t

(6): Undefined time period

g

B

g

– KeyConnection Example

S1/S2: Two-hand pushbuttons

NSG-D-2-082-2008-10