Swann AMI Codes-II Operator's Manual page 92

AMI Codes-II
Program List and Explanations
5.3.2.1
5.3.2.22
5.3.2.32
5.3.2.32.1
5.3.2.32.20
5.3.2.32.30
5.3.2.32.4
5.3.2.32.1
5.3.2.32.21
90
Function = Control upwards/downwards:
The relays may be used to drive control units such as solenoid
valves, membrane dosing pumps or motor valves. When driving a
motor valve both relays are needed, relay 1 to open and relay 2 to
close the valve.
Parameter: Choose on of the following process values.
 DIS
 pH
 Temperature
 Sample Flow
Settings: Choose the respective actuator:
 Time proportional
 Frequency
 Motor valve
Actuator = Time proportional
Examples of metering devices that are driven time proportional are
solenoid valves, peristaltic pumps.
Dosing is controlled by the operating time.
Cycle time: duration of one control cycle (on/off change).
Range: 0–600 sec.
Response time: Minimal time the metering device needs to react.
Range: 0–240 sec.
Control Parameters
Range for each Parameter same as
Actuator = Frequency
Examples of metering devices that are pulse frequency driven are
the classic membrane pumps with a potential free triggering input.
Dosing is controlled by the repetition speed of dosing shots.
Pulse frequency: Max. pulses per minute the device is able to re-
spond to. Range: 20–300/min.
5.2.1.43, p. 85
A-96.250.571 / 050517