Qualitrol 509ITM Series, Руководство пользователя

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Math
Expression
(3 fields) Allows you to enter a math function in each of the three available fields.
The first and third fields allow the math functions “or”, “and”, and “minus”.
The second field allows only “or” and “and”. The “minus” function(s) are
first evaluated in the matrix math expression. Otherwise, the overall
equation is evaluated from left to right.
Example: If the Matrix table is set up as:
Control
Signal
1
or
Control
Signal
2
or
Control
Signal
3
minus
Control
Signal
4
The system will evaluate this as:
(( Control Signal 1 OR Control Signal 2 ) OR ( Control Signal 3 MINUS Control
Signal 4 )).
Auxiliary Setpoint and Low Temperature Lockout Feature
The original 509ITM had a feature for an auxiliary current setpoint and a low
temperature lockout feature. This has now been incorporated into the relay matrix
and can be accomplished using the following example:
1. Set Control Signal 1
to “WINDING”,
Setpoint
to “80.00” (

C), and Actuation
Direction
to “up”.
2. Set the first (far left) Math Expression
to “or”.
3. Set Control Signal 2 se
t to “WINDING - current”,
Setpoint
to “500.00” (Amps),
and Actuation Direction
to “up”.
4. Set the middle Math Expression
to “and”.
5. Set Control Signal 3
to “AMBIENT”,
Setpoint
to “10.00” (

C), and Actuation
Direction
to “up”.
The system will evaluate the relay if the winding temperature or winding current
exceed the setpoints and will actuate the relay only if the ambient temperature is
above 10

C.
Matrix
Controlled
versus
Cooling / LTC
Controlled Allows you to select if the relay is to be controlled by the Control Signal Matrix
table. To assign a relay to a Cooling or LTC Monitor function, you must be in their
setup windows. See 509ITM-200 & 509ITM-300 sections of the manual for further
information.