Hach-Lange SI794 I User Manual User Manual
Page 107
107
Limit values
Output via relay contacts R1, R2
Contacts R1, R2 floating
but inter-connected
Contact ratings
AC< 250 V / < 3 A / < 750 VA
DC< 30 V / < 3 A / < 90 W
Contact response
*
N/O or N/C
Delay
*
0000 ... 9999 s
Switching points
*
As desired within range
Hysteresis
*
0 ... 50 % full scale
PID process controller
Output via relay contacts R1, R2
(see limit values)
Setpoint specification
*
As desired within range
Neutral zone
*
As desired within range
Proportional action
*
Controller gain
K
C
:
0010 ... 9999 %
Integral action
*
Reset time
T
R
:
0000 ... 9999 s
(0000 s = no integral action)
Derivative action
*
Rate time
T
D
:
0000 ... 9999 s
(0000 s = no derivative action)
Controller type
*
Pulse length or pulse frequency controller
Pulse period
*
0001 ... 0600 s, min. ON time 0.5 s
(pulse length controller)
Max. pulse frequency
*
0001 ... 0180 min
-1
(pulse frequency controller)
Cleaning function / Parameter set 2
*
Clean / PSet2
Relay contact, floating,
for controlling a rinsing probe or
signaling that 2nd parameter set is active
Contact ratings
AC < 250 V / < 3 A / < 750 VA
DC < 30 V / < 3 A / < 90 W
Contact response
N/O when signaling parameter set 2
N/O or N/C when used as cleaning contact
*
Rinsing interval
*
000.0 ... 999.9 h
(000.0 h = cleaning function switched off)
Rinse duration
*
0000 ... 1999 s