D521-Manual_EN_Rev07 2017_05_26
Page 4 of 31
2
Description
2.1
Function
The device measures the speed of rotating equipment such as turbines, compressors or ex-
panders and monitors it versus setpoints and converts it into an analog output.
Parameters may be set via front keyboard and display or via the RS-232 data interface.
2.2
Display and Operating Elements
2.3
Display
During normal operation, the speed will be displayed.
2.4
Status LEDs
LEDs 1 to 4 are on if the corresponding output relays of SP1 to SP4 are energized.
2.5
Functions during normal operation
Key
: Reset of latched max./min. -values speed
Key
: Display of latched max. speed
Key
: Display of latched min. speed
Keys
and
: Reset of latched alarms
2.6
Event Codes on Display
-E1- :
Wrong code figure in step P00.00
SE-01 :
Sensor fault or signal lead break
Display
Data-Interface
LEDs
1 to 4
Operation
Keys
1
RS232
D521
2
3
4
26
25
24
23
22
21
20
19
18
17
16
15
14
1
2
3
4
5
6
7
8
9
10
11
12
13
P
E
