E16521D-Manual_EN_Rev12 2021_JAN_14
Page 7 of 26
2.6
Display of Firmware Release State and CRC-Parameter-Checksum
With key pressed longer as 5 seconds, the firmware release state and the CRC-Parameter-
Checksum will be shown in a scrolled display (as long as is pressed).
A.0456
(firmware ID)
U._ _xx (xx = firmware version number)
D.uu_ _ (uu = day)
D._vv_
(vv = month)
D._ _ww (ww = year of firmware release state)
C.abcd
(abcd = CRC-Parameter-Checksum)
2.7
Event Codes on Display
-E1- :
Wrong code figure in step P00.00
SE-01 :
Sensor fault or signal lead break
2.8
Measuring Principle
Measurement is based on the frequency of the pulse sequence representing the speed. Basic
quantity is the time between one or more of its pulses. An automatic function determines this
number, in order to maintain a minimum period of time for every measurement to be extended
over. This time minimum is programmable to 5 milliseconds or more, thus establishing a corres-
ponding averaging and stabilization of measurements.
The corresponding speed value in terms of RPM, by which the display, the alarms and the
analog output are reading, computes from these measurements. This process further considers
the programmed application data (relation between machine speed and signal frequency).
2.9
Performance at Signal Break
In normal operation, the function closely tracks the input sequence, with the programmed
performance. After a sudden interrupt of the input pulses, the unit reduces the readings following
an automatic step-down sequence. This starts as fast as the most recent measuring sequence
before interrupt but then decreases slower and slower (reciprocal) until it meets the programmed
low end.
2.10
Input Starter
As long as the input Starter is true, the enabled setpoints will be put to their assigned relay state.
Note:
A positive edge at the input Starter will reset latched alarms.
2.11
Input Reset
A positive edge at the input Reset will reset latched alarms.
The input Reset must be actuated once after power up of the Monitor (if parameter P01.07 = 0).
if:
•
power has failed and returns at speed < SP2 and input Starter is still true
•
power has failed and returns at speed > SP2 and input Starter is still true or not true
2.12
Setpoint SP1 with Safety Output OR1
SP1 has individually programmable response characteristics.
OR1 has two SPDT relays connected in series.
OR1 can be programmed to respond also to SP2.
2.13
Setpoints SP2 with OR2, SP3 with OR3, SP4 with OR4
Each with individually programmable response characteristics, and each with programmable
starter.
