Bender VMD460-NA - Page 79

Technical data VMD460-NA
79
VMD460-NA_D00001_05_M_XXEN/01.2020
Recording of measured value, condition for disconnection:
df/dt ................................................................................................................................................................. 0.05…9.95 Hz/s
Time response
Delay time for connection t
on
...........................................................................................................................40 ms…60 min
Resolution of setting t
on
< 50 ms: .............................................................................................................................................................................. 5 ms
50 …200 ms: .................................................................................................................................................................... 10 ms
200 ms …5 s: ................................................................................................................................................................... 50 ms
5 …10 s: .............................................................................................................................................................................. 0.1 s
0 …60 s: .................................................................................................................................................................................1 s
60 …300 s: ...........................................................................................................................................................................10 s
300 s…60 min: .................................................................................................................................................................1 min
Operating time voltage t
ae
.......................................................................................................................... half a supply period
Operating time, frequency t
ae
...................................................................................................................................... ≤ 40 ms
Recovery time t
b
........................................................................................................................................................... ≤ 300 ms
Digital inputs
Monitoring of potential-free contacts or voltage inputs:................................................ closed = low; 0…4 V; I
in
< –5 mA
........................................................................................................................................................open = high; > 6…≤ 30 V
D1 ...................................................................................................................................................... feedback signal contact K1
D2 ...................................................................................................................................................... feedback signal contact K2
D3 .................................................................................................................................................................local control (mode)
D4 .............................................................................................................................................................external signal (mode)
RT1...............................................................................................................................................................................remote trip
DG1/2, DG3/4, RTG................................................................................................................................................................GND
Max. length of the connecting cables of digital inputs ........................................................................................................3 m
Displays, memory
Display ....................................................................................................................... LC display, multi-functional, illuminated
Display range measured value ...................................................................................................................... AC/DC 0…520 V
Operating uncertainty, voltage................................................................................................................... U ≤ 280 V: ≤ ±1 %
..........................................................................................................................................................................U > 280 V: ±3 %
Operating uncertainty, frequency .............................................................................................................................. ≤ ±0.1 %
History memory for the last 300 messages ...................................................................... 1 data record measured values each
Password...................................................................................................................................................on/off/0…999 (off*)
Switching elements
Number of changeover contacts ........................................................................................................................... 2 x 1 (K1, K2)
Operating mode ............................................................................................................................. NC operation/NO operation
Electrical endurance under rated operating conditions, number of cycles......................................................................10,000