Section 3.5 Channel Enable And Disable Times; Section 3.6 Your Module ' S Response T O Slot Disabling - Spectrum Controls SLC 500 User Manual

Table 3-3. Auto-calibration Time Per Channel (Based on Filter Frequency)
Current
Input
Voltage
Input (-
INI4vi only)
Section 3.5
Channel Enable
And Disable Times
Your module requires some time to enable or disable a channel. During this time,
your module cannot sample and convert input signals. Table 11 shows the time
required for enabling or disabling a channel.
Table 3-4. Channel Enable and Disable Times.
Channel Enable
Channel Disable
Section 3.6 Your Module's Response To Slot Disabling
By writing to the status file in the modular SLC processor, you can disable any
chassis slot. Refer to your SLC programming manual for the slot disable/enable
procedure.
POSSIBLE EQUIPMENT OPERATION
WARNING
Always understand the implications of disabling a module before using
the slot disable feature.
Failure to observe this precaution can cause unintended equipment
operation.
When you disable an input module's slot, the input data in the processor image
table remains in its last state. When you re-enable the input module's slot, the
processor image table is updated during the next scan.
Chapter 3: Configuring the 1746sc-INI4I
Filter Frequency
50 Hz 60 Hz
182 ms 152 ms
508 ms 430 ms
Duration
Up to 6.5 ms
Enabling user-defined scaling may require an
additional 0.1 ms.
Up to 5.5 ms
250 Hz
39 ms
108 ms
User's Manual Pub. 0300266-04 Rev. A
3-7
500 Hz
19.6 ms
56 ms