Richter SAFERUN - Manual (Page 5)

Series MNK, MNK-B, SAFERUN ® Pump condition monitoring system Page 5
9230-070-en Revision 01
TM 7691 Edition 11/2009
3 Product description
3.1 Function
Note:
see Section 1.4.
The system reports changes in the operating condi-
tion permitting conclusions to be drawn about the op-
eration of the pumps in relation to the admissible
ranges of operation specified by the manufacturer.
The messages are to be understood as assistance for
the operator to avoid critical conditions which, over a
prolonged period, can result in damage or even failure
of the pump.
The system records the torque acting on the magnetic
drive of the pump and compares it continuously with
reference values; any values exceeded or undershot
are reported as an event.
Messages are displayed by coloured LEDs in the
back plate. Approx. max. 2,000 data records are
stored in a non-volatile memory and can be read out
via the radio interface with an appropriately equipped
handheld unit (PDA: option).
The connection cable used to supply power serves, at
the same time, to output and analog current signal to
other instruments. The value of the output current
corresponds to the operating point of the pump. The
output current depends on the parameters.
Owing to the integrated HART capability of the sys-
tem, additional information (temperature, speed,
torque, output signal i in mA) can be transmitted to a
master process system for further processing. The
requirements placed on the power supply are listed in
the Annex (Technical specifications).
3.2 Design
The SAFERUN
®
consists of a sensor unit (SAFE-
RUN ® can) integrated in the pump and the SAFE-
RUN ® transformer mounted externally. Both are linked
by a detachable cable connection. The SAFERUN ®
transformer is mounted, as a standard feature, on the
side on the pump bracket. Optionally, it is possible to
install the SAFERUN
® transformer separate from the
pump using a correspondingly longer cable connec-
tion (accessories).
The power supply to the system is provided
by a suitable external energy source (e.g. by a
certified feed and signal isolator in a 3-wire
circuit with circuits of the ignition protection class "In-
trinsically safe").
The SAFERUN
® transformer may only be
connected to the original SAFERUN ® can from
Richter.
The scope of delivery comprises:
SAFERUN ® transformer
Attachment unit (holding plate with screws)
SAFERUN
® can unit
Plug connection
Documentation, such as operating manual, specific
safety notes on potentially explosive areas and,
where applicable, other certificates.
Fig. 3
3.2.1 User interface and connections
SAFERUN ® transformer
1 Communication window for radio connection
2 Status display "Direction of rotation"
3 Status display "System fault"
4 Status "Operating point“
5 Status display "Sudden change in condition"
6 Connection for power supply
7 Cable and plug connection to the SAFERUN ®
can unit