Chapter 3 – Installation Instructions
ACS 501 Installation & Start-up Manual 3-15
X50
Terminal Block X50 can accept wire sizes from 16 – 22 AWG. All
connections to terminals X50:1 to X50:20 should be made with shielded
cables.
X50:2, 4, 6, 8, 18, and 20 are circuit common. They are optically isolated
from the power line potential and from chassis ground by a 10 megohm
resistor. The common points are not isolated from each other.
Note: The ACS 501 is shipped with a wire from X50:8 to chassis ground, or
with a jumper labeled S9 next to X50. This connects the circuit common
to chassis ground. To isolate the circuit common from ground, remove
this connection.
Potentiometer
A manual speed potentiometer is connected to the reference at X50:1 (+ 10
VDC) and X50:2 (common) and to one of the analog inputs.
Analog Inputs
There are two analog inputs. AI1 is on terminals X50:3 and X50:4. AI2 is on
X50:5 and X50:6.
The analog inputs can accept a voltage signal (0 – 10 VDC) or a current signal
(0 – 20 mA), as selected by jumpers S1 and S2 (S1 for AI1 and S2 for AI2).
The jumper is placed in the V position for voltage and the I position for
current. Figure 3-8 shows jumper positions.
Note: The orientation of the jumpers may be different than the illustration
below. Settings should be made based on the identification on the
circuit board.
Figure 3-8 Jumper Positions
Auxiliary 24 VDC
An auxiliary +24 VDC supply is available on terminals X50:7 and X50:8.
This supply can drive auxiliary devices whose total current draw is less than
200 mA.
Digital Inputs
There are six digital inputs, DI1 through DI6 on terminals X50:11 through
X50:16 respectively. The digital inputs use 24 VDC logic from terminal
X50:10 and are active high.
Analog Outputs
There are two analog output signals. AO1 is on terminals X50:17 and X50:18.
AO2 is on X50:19 and X50:20. These signals are 0 – 20 mA (or 4 – 20 mA)
and can operate into a maximum 500 ohm load.
VIVI
Voltage Current
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