Operation
8.5 Special functions
Installation and Operating Instructions SINAMICS G180
162
Operating Instructions, 02/2019, 4BS0751-007
Proximity switch with NAMUR output or with PNP-3 wire output
Figure 8-27 PNP speed sensor
Figure 8-28 NAMUR speed sensor
Assumption: sensor produces four impulses per revolution for four-pole motor, nmax = 1500
rpm.
Note the following:
This speed is available for further processing as "Tacho act" from 0 rpm to 1500 rpm and as
"Pulse act" from 0 % to 100 %.
●
Connection according to connection diagram.
You must connect the tachometer signal at terminal -X2:27. You must keep terminal
-X2:28 free, and control terminal -X2:29 with 24 V (e.g. jumper from -X2:29 to -X2:55) for
an evaluation as 1-track tachometer or as frequency evaluation. Bit pool bits X2:27 to
X2:29, PTC X2:27 and PTC X2:28 are permanently set to "0".
●
Parameterize the following:
–
At f
≠
20 kHz: 1500 rpm / 60 s × 4 pulses = 100 Hz.
Select the following values for the respective parameters:
Table 8- 10 Parameter setting for speed sensor
Parameter
Value
"P-PULSE INPUT/Mode"
"Tacho 1-track"
"P-PULSE INPUT/Max.plse."
"1500 rpm"
"P-PULSE INPUT/Pulses/360"
"4"
