* When operating together with the
“
Z-Modul-B
”
type add-on module, the diagnosis menu is automati-
cally expanded to include the additional inputs and outputs (installation not possible in Icontrol
fl
at).
11.1
Special features for measurements at the innverter and motor
11.1.1
Measuring arrangement
Pulse-width-modulated voltages can cause malfunctions and measurement errors by capacitive
unbalances.Such types of errors can be avoided, or at least be considerably reduced, if a number of
basic rules are observed:
1. Spatial separation of control cables from motor current and lines cables.
2. Spatial separation of line and motor cables.
3. Screening of the control cables.
4. Screening of the motor cables.
5. Use only screening measuring cables with the probe. Do not con
fi
gure these parallel to motor
cables
11.1.2
Voltage measurements
Voltage measurements can be made without restrictions only on the the mains side of the frequency
inverter or EC controller.
Due to the content of the harmonic frequencies, on the motor side meaningful measurements are only
possible when using measuring equipment that is capable of measuring the fundamental voltage.
11.1.3
Current measurements
Current measurements can be made without restrictions only on the motor side of the frequency
inverter or EC controller.
Line side measurements of the current may only be performed using true r.m.s. measuring equipment.
The line current cannot be measured with suf
fi
cient accuracy using customary measuring equipment
(for sinusoidal currents of corrected arithmetic mean).
12
Events / Fault signals
12.1
Display and query of events and malfunctions
Events
Events during operation can lead to a malfunctioning of the device.
The last 10 (0 - 9) events and malfunctions are stored in the
“
Events
”
menu group
(position
“
0
”
= most recent event).
Essemple for possible
events
The device differentiates between 3 types of events:
Sensor 1
1. Messages with code
|
Msg
|
Message sensor fault for information, for Alarm sensor
deactivated.
External error
2. Alarms with code
|
AL
|
Events during which the device automatically restarts
operation after the cause of the malfunction has been remedied (e.g. mains failure), or
remains in operation (e.g. externally-trunked centralized fault).
Motor fault
3. Error with code
|
Err
|
Events that lead to a disconnection of the controlled output
(e.g. excess motor temperature). Restarting is only possible after a reset (locked).
Motor fault
Controllers period of operation at time of message:
With the
P
key can be switched between description of the
message and the Controllers period of operation at this time.
E.G. on place 3 which is past message
motor fault
.
00009:01:08
Operating Instructions
Icontrol
–
model series FXDM
Events / Fault signals
L-BAL-E036-GB 1422 Index 008
Part.-No. 00154773-GB
83/96
