Fairbanks X SERIES PR 5410 Process Indicator - Manual (Page 11)

Section 1: Warnings and Safety Precautions
10/08 11 51207 Revision 1
1.3.3 Grounding and Shock Prevention PR 5410/00
The instrument must be connected to protective earth via a protective earth conductor (PE) in the
power connector. The power cable contains a protective earth conductor which must not be
interrupted inside or outside the unit (e.g., by using an extension cable that does not have a
protective earth connection). The PE conductor is connected to the back panel of the housing inside
the instrument.
1.3.4 Grounding and Shock Prevention PR 5410/01
The back panel of the housing must be connected to protective earth.
1.3.5 Power Connection and Power Supply PR 5410/00
The unit does not have a power switch and is ready for operation immediately after connecting the
supply voltage. Safe interruption of both supply voltage conductors must be provided for, either by
disconnecting the power connector or using a separate switch. The unit is equipped with a wide
range power supply and covers AC systems with a frequency of 50 Hz/60 Hz and a voltage range of
100 VAC to 240 VAC +10%/-15% automatically (without manual selection). The power supply is
protected against short circuits and overload, and switches off automatically in the event of failure.
When the electronic protection is triggered:
•
Disconnect the unit from all voltage sources and wait at least one minute.
•
Determine and eliminate the source of error.
•
Re-connect the unit to the supply voltage.
1.3.6 Power Connection 24 VDC PR5410/01
The version PR5410/01 is designed for 24 V direct current.
The supply is done with two screw terminals (- 24V +), the instrument is protected
against wrong polarity.
The instrument is protected by a fuse in the + conductor on the back panel of the
housing.
1.3.7 Failure and Excessive Stress
If there is any reason to assume that safe operation of the instrument is no longer ensured, shut it
down and make sure it cannot be used. Safe operation is no longer ensured if any of the following is
true:
- The instrument is physically damaged
- The instrument does not function
- The instrument has been subjected to stresses beyond the tolerance limits (e.g., during storage
or transport).
1.3.8 Important Note
Make sure that the construction of the instrument is not altered to the detriment of safety. In
particular, leakage paths, air gaps (of live parts) and insulating layers must not be reduced. cannot
be held responsible for personal injury or property damage caused by an instrument repaired
incorrectly by a user or installer.