Hach-Lange SI794 D User Manual - Manual (Page 92)

Alarm contact Relay contact, floating
Contact rating AC < 250 V / < 3 A / < 750 VA
DC < 30 V / < 3 A / < 90 W
Contact response N/C (fail-safe type)
Response delay * 0000 ... 0600 sec
Limit values Output via relay contacts R1, R2
Contacts R1, R2, floating but inter-connected
Contact rating AC < 250 V / < 3 A / < 750 VA
DC < 30 V / < 3 A / < 90 W
Contact response * N/C or N/O
Response delay * 0000 ... 9999 s
Setpoints * Within selected range
Hysteresis * 000.0 ... 050.0 % / 00.00 ... 05.00 mg/L (ppm)
PID process controller Output via relay contacts R1, R2
(Relay R1: below setpoint,
Relay R2: above setpoint)
Setpoint specification * 0 ... 500 % / 0.00 ... 50.00 mg/L (ppm)
Neutral zone * 000.0 ... 050.0 % / 00.00 ... 05.00 mg/L (ppm)
P-action component * Controller gain Kp: 0010 ... 9999 %
I-action component * Reset time Tr: 0000 ... 9999 s
(0000 s = no integral action)
D-action component * Rate time Td: 0000 ... 9999 s
(0000 s = no derivative action)
Controller type * Pulse length controller 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)
Specifications
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