AMETEK 2120 PLC Interface Module - Manual (Page 34)

30 Installation and Programming Manual
Chapter 4: Programming
307
NOTE: The Variable Pulse with external interrogation mode is not compatible with the 952 probe.
When using a 952 probe, select a different mode of operation.
Enter New
Value
0 thru 3
Most magnetostrictive LDTs send out a fault pulse during a fault condition. The series 2120
Interface Module is preset for use with all Gemco LDT products. The Fault Pulse Time function
is used to program the pulse time of the fault signal sent by an LDT not manufactured by
Gemco. When the monitor receives a fault signal of this pulse time, it will indicate an error (see
Appendix A: Error Messages). The default for this function is 10 microseconds. This value
can range from 1 to 99 microseconds. A 0 is entered in this function to disable it. To change the
value of the fault pulse time or disable this function, perform the following steps:
NOTE: Do not change the value unless using an LDT other than Gemco.
1. Select the function key.
The monitor displays “F-----”.
2. Select function number 306 . Select the enter key.
The monitor displays the function’s current value.
3. Enter a 0 to disable this function or enter a new fault pulse time. Select
the enter key.
Fault Pulse Time (306)
306
LDT Output Type (307)
This function is used to confi gure the L1 input board for use with a specifi c LDT output. Review
legend plate of the LDT for output type, i.e. CP, RS or VP. Perform the following steps:
1. Select the function key.
The monitor displays “F-----”.
2. Select function number 307 . Select the enter key.
Enter either:
0 = CP
1 = RS
2 = VP (external interrogation) (See Note below)
3 = VP (internal interrogation)*
3. Select enter key.
*If used, consult the factory for additional settings.
(F)
(F)