AST BS 805.01, User Manual

Page: 8 / 16

Manual switching amplifier BS 805
Page 4 of 12 Subject to technical change 10/2017
A.S.T. Angewandte SYSTEM-TECHNIK GmbH Dresden
3.1. Adjustments
3.2. Button
4. LED- display
Switch Function
Strain gauge switching amplifier
BS 805.01
BS 805.11
BS 805.21
>V< 16 mA - characteristic value setting 0,8 … 2,5mV/V
>0< 4mA - setting to zero point -0,5 … +0,5mV/V
SP1 Switching point setting/ switching range 4....20mA
SP2 Switching point setting/ switching range 4....20mA
D Switching delay for SP2 0 ... 5sec.
Switch
Function
T1 Additionally function see Point 5
LED Normal operations Error (flashing display)
U1 <4mA incorrect code enter
U2 4mA < I < 8mA
U4 8mA < I < 12mA -
U8 12mA < I < 16mA -
U16 16mA < I < 20mA -
U32 20mA < I -
U78 Ready for operation break or short in sensor wire
blinks once Current level exceeded tEX
for BS805.y1 bridge resistance < 300

for BS805.y1 sensor current > 40mA
blinks twice Current level not attained tEX
Only for BS805.y1 bridge resistance > 1000

blinks 3 times Input signal exceeded
for BS805.y1 bridge signal = > +2.5mV
blinks 4 times Input signal not attained
for BS805.y1 bridge signal < -2.5mV/V
blinks 5 times Bridge median voltage exceeded
only for BS805.y1 (–SI zu –EX >2.2V)
blinks 6 times Bridge median voltage not attained
only for BS805.y1(–SI zu –EX <1.2V)
U21 SP1 current on -
U22 SP2 current on -