Nivus OCM PRO CF, Инструкция по эксплуатации

Страница: 164 / 194

Instruction manual
OCM Pro CF
page 164 OCM Pro CF - Rev. 09 as of 07.06.2016
®
Unplausible
measurement value Hydraulically unsuitable
measurement place See "Unstable measurement values".
External level signals Check for correct connection.
Check if cables are crushed, for short circuits and
improper resistive loads or current consumers
without galvanic isolation.
Check measurement range and span.
Check input signal in I/O menu.
Sensor Check for correct connection.
Check if cables are crushed / for extensions/cable
types, short circuits, surge arresters or improper
resistive loads.
Check level signal, echo profile, flow velocity signal,
cable parameters and temperature in I/O menu.
Check if sensor is installed on a vibration-free place.
Check sensor installation (towards flow direction,
horizontal installation), check sensor for soiling.
Programming Check if the correct shape of measurement place
has been set, check dimensions (observe units),
sensor type, sensor installation height etc.
Faulty relay output Connection Check connections on terminal clamp strip.
Check power supply of external control relays.
In I/O menu check signals to be output.
Check output control function in calibration menu.
Transmitter Check transmitter type. Type S4 has only 2 relay
outputs, type M4 however 5 relays.
Programming Check if relay outputs are enabled.
Check if outputs are correctly assigned to respective
output channels.
Check additional values such as impulse
parameters, limit values, logic etc.
No controller function Connection Check terminal clamps (relays 4 and 5 are
dedicated to controller function).
Check power supply of external control relays.
Check input signals from limit contacts and setpoint.
Check output control function by using menu manual
controller operation.
Transmitter Check transmitter type. Only type M4 is suitable for
controller operation.
Programming Check settings. Controller enabled? Controller
parameters set? Analog input set and enabled as
setpoint? Relay outputs enabled?
Faulty mA output Connection Check connection clamps for correct wiring and
polarity.
In case of using several outputs: check following
systems/indicators if they are potential-free. Two
analog outputs at a time have a common ground.
Programming Output enabled?
Check if functions have been assigned to correct
output channel.
Check output range (0 or 4-20 mA)