Specifications

232 PRT-CTRL-SE Protege System Controller Reference Manual | PRT-CTRL-SE
Base Register Configuration
Register 00100 Input Set Point = 1200
Register 00101 Input Hysterisis = 100
Register 00102 Input Hysterisis Time = 20
Given the above settings and assuming that the data value for the input comparison is set to 0 when the
programmable function is started after 20 seconds the low PGM (if it is set) will be activated. When the data
value rises and exceeds the 1200 set point for longer than 20 seconds (Hysterisis Time) the low value will be
deactivated. If the input then exceeds the set point plus the hysterisis value (1300) for longer than 20 seconds
the high PGM will be activated and will deactivate when the input value is below the set point for longer than the
20 second time.
Setting a very low hysterisis time value can result in the system oscillating and causing unstable operation, it is
recommended to have a reasonable value for these settings.
Daylight Sensor
For example a daylight sensor that can be used would be set to hysterisis of 250 and a time of 120 seconds,
this ensures any variation in cloud cover, headlights or other scenarios are managed by the comparison function
and would not cause the lights being controlled from either flicking off or on in a brief over/under light situation.
Comparison Input Register
The comparison input register is used for the source of the data to perform a comparison. For example using a
register setting of 00000 would perform a comparison with the data being sent from Channel 1 of the first
Analog Expander.
i
The comparison input register DOES NOT have to be a register that is linked with an analog expander.
This can be a register that is controlled from the Protege System Management Suite or from another
register. This is also an ideal method of testing the comparison function before putting it in to
operation.
FN001 Comp inp
reg: 00000
To modify the comparison input register (00000 to 65535), use the keypad as explained in section Entering
Decimal Numbers (see page 333) and press [ENTER].
Ripple Control PGM Output Function
The ripple control function will activate and then deactivate in sequence the PGM's that are assigned to the
stage outputs. Ideally suited for staging on lighting and air conditioning systems in large industrial sites.
FN001 Func Type
Ripple PGM
Use the [1] and [3] keys to scroll the function types until you reach the Ripple PGM selection and press [ENTER]
to select the function type displayed and proceed to the next programmable option for the Value Compare
function. For more information about the list control data entry refer to the section List Control Data Entry (see
page 335).