Ref: REFLEX/SCANFLEX MANUAL
EDITION 1: JULY ’97 22
Pr.6 Blocking or Blanking Zone (Defined for each point) (D=1.00)
The distance in front of the transducer, within which the material should not enter, and
within which no return echoes will be processed. It is important to ensure that the
material being measured does not enter this zone.
Enter in the units selected in Pr.3.
DO NOT REDUCE THE FACTORY SET VALUE WITHOUT REFERENCE
TO HYCONTROL.
Pr.7 Rate of Change (Defined for each point) (D=1.00)
This value should be as small as possible but greater than the maximum rate of change
of level. Do not change this value unless you know that the rate of change is greater
than 1.0m/min.
If it is necessary to change the value, enter the new value in units per minute selected
in Pr.3. The suggested range of values is 0.1 to 10 metres/min or the equivalent.
Relays
In single point application the 5 relays in the Reflex Controller can be assigned to
various functions depending on the application, as shown below:
Hysteresis is fully adjustable, so for most functions it is necessary to enter both "set"
and "reset" values.
The relay state under normal operating conditions is defined as:-
(e) = normally energised. De-energise when "set" value is reached.
(d) = normally de-energised. Energise when "set" value is reached.
"Failsafe" functions are detailed in Pr.23 - 27.
The relays can be programmed to give both high and low alarm or control levels.
e.g. High alarm Set: 2.0m Low Alarm Reset: 0.5m
Reset 1.8m Set 0.2m
The system will automatically configure itself as high or low alarm depending on
which of the set and reset entries has the higher value.
Note that on distance measurement only (Pr.3 = 3 or 4), the highest value is furthest
from the transducer.
Defaults are 0 for relay designations 8, 11, 14, 17 and 20.
Defaults are 0.00 for relay settings 9 & 10, 12 & 13, 15 & 16, 18 & 19, and 21 & 22.
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