PNOZ_X2_8P_Operat_Manual_1004082-EN-21.pdf - 第15页
PNOZ X2.8P Operating Manual PNOZ X2.8P 1004082-EN-21 | 15 Feedback loop Automatic start Manual start Contacts from external contactors K5 K6 K5 L1 N K6 S12 13 (23,33) S34 14 (24,34) K5 K6 K5 L1 K6 S12 S34 S3 N 13 (23, 33…
PNOZ X2.8P
Operating Manual PNOZ X2.8P
1004082-EN-21
| 14
NOTICE
With single-channel wiring the safety level of your machine/plant may be
lower than the safety level of the unit (see Safety characteristic
data [ 27]).
NOTICE
Operation with a light guard or safety switch
It must not be possible to switch off the supply voltage for the PNOZ X2.8P
separately from the supply voltage for the light guard or safety switch.
Start circuit E-STOP wiring, safety gate
(single-channel)
E-STOP wiring, safety gate (dual-
channel)
Automatic start
Manual start
NOTICE
In the event of an automatic start or manual start with bridged start
contact (fault):
The unit starts up automatically when the safeguard is reset, e.g. when the
E-STOP pushbutton is released. Use external circuit measures to prevent
an unexpected restart.
PNOZ X2.8P
Operating Manual PNOZ X2.8P
1004082-EN-21
| 15
Feedback loop Automatic start Manual start
Contacts from external contactors
K5
K6
K5
L1
N
K6
S12
13 (23,33)
S34
14 (24,34)
K5
K6
K5
L1
K6
S12
S34
S3
N
13 (23, 33)
14 (24 ,34)
Legend
} S1/S2: E-STOP/safety gate switch
} S3: Reset button
} : Switch operated
} : Gate open
} : Gate closed
Operation
When the relay outputs are switched on, the mechanical contact on the relay cannot be
tested automatically. Depending on the operational environment, measures to detect the
non-opening of switching elements may be required under some circumstances.
When the product is used in accordance with the European Machinery Directive, a check
must be carried out to ensure that the safety contacts on the relay outputs open correctly.
Open the safety contacts (switch off output) and start the device again, so that the internal
diagnostics can check that the safety contacts open correctly
} for SIL CL 3/PL e at least 1x per month
} for SIL CL 2/PL d at least 1x per year
NOTICE
The safety function should be checked after initial commissioning and each
time the plant/machine is changed. The safety functions may only be
checked by qualified personnel.
PNOZ X2.8P
Operating Manual PNOZ X2.8P
1004082-EN-21
| 16
Status indicators
LEDs indicate the status and errors during operation:
LED on
POWER
Supply voltage is present.
CH.1
Safety contacts of channel 1 are closed.
CH.2
Safety contacts of channel 2 are closed.
Faults – Interference
} Earth fault: The supply voltage fails and the safety contacts open. Once the cause of the
respective fault has been rectified and the supply voltage is switched off for approx.
1minute, the unit is ready for operation again.
} Contact malfunctions: If the contacts have welded, reactivation will not be possible after
the input circuit has opened.
} LED "POWER" does not light: Short circuit or no supply voltage.
Dimensions in mm
* with spring-loaded terminals