Burkert Type 8750 - Manual (Page 46)

46
Safety end positions
Typ 8750
15. safeTy end posiTions
actuator
system
designation
safety end positions after
failure of the auxiliary power
electrical pneumatic
up
down
single-acting
Control
function A
down
pilot-controlled
control system:
down
direct-acting
control system:
not defined
up
down
single-acting
Control
function B
up
pilot-controlled
control system:
up
direct-acting
control system:
not defined
up
down
double-acting
Control
function I
down / up
(depending
on the con-
nection of
the control
cables)
not defined
Tab. 30: Safety end positions
16. error messaGes
General error messages (display only for external set-point value and
with activated
SIG.ERR).
display cause remedial action
min
Minimum input value has
been reached. Do not reduce
value further.
max
Maximum input value has
been reached. Do not increase
value further.
SP error
Signal error set-point value
process controller
Check signal
P1 error
Signal error actual value P1
Flow control system
Check signal
P2 error
Signal error actual value P2
Flow control system
Check signal
invalid code Incorrect access code.
Enter correct
access code.
EEPROM
fault
EEPROM defective.
Not possible,
device defective
Tab. 31: General error messages
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