RMS Technologies IMDP 23 W/ POLE DAMPING TECHNOLOGY*NEW* - Manual (Page 23)

RMS Technologies Page 23 Version 1.04
IMDP23/IMDEP23 Manual 8/4/2010
NOTE: These recommendations will provide optimal protection against EMI and RFI. The actual cable
type, wire gauge, shield type and filtering devices used are dependent on the customer’s application
and system.
Driver Supply Cable AWG Table
1 Amp (Peak)
Length (Feet) 10 25 50* 75* 100*
Minimum AWG 20 20 18 18 16
2 Amp (Peak)
Length (Feet) 10 25 50* 75* 100*
Minimum AWG 20 18 16 14 14
3 Amp (Peak)
Length (Feet) 10 25 50* 75* 100*
Minimum AWG 18 16 14 12 12
* Use the alternative methods illustrated in Examples B and C
when the cable length is ≥ 50 feet. Also, use the same current
rating when the alternate AC power is used
Table 4: Driver Supply Cable Wire Size
NOTE: Always use Shielded/Twisted Pairs for the Driver DC Supply Cable.
Step Rising/Falling Detect:
This feature allows for more compatibility with controllers and PLC’s. The Silverpak 23D
driver board receives step pulses from a pulse train, normally a TTL signal, sensing each
pulse, one by one.
The step rising detection feature can choose where to sense each pulse: on the rising edge
of the step or the falling edge (also known as the positive or negative edge).
Below depicts a step pulse train waveform where the rising edge is more of a curve. If the
IMDP23 is set to read this type of signal on the rising edge, inaccurate steps and unsmooth
motion may occur.
It is best to switch the step sensing to the negative edge, or falling edge. Notice in this
example, the falling edge is a clear signal and a definite difference between high to low.