Plc Interface Suggestions - PowerTec Regenerative Brushless DC Motor Control 1000AR Installation And Operation Instruction Manual

24
Page
P L C I N TE R F AC E
SINKING CONNECTION
TB2
DRIVE
+24VDC
10
ZERO
1
SPEED
16
SOURCING CONNECTION
TB2
DRIVE
+24VDC
10
2Kohm
MIN
ZERO
1
SPEED
16
FAULT MONITOR
TB1
FAULT 12
13
1000AR
Model Installation and Operation Manual
The interface of the Models 1000 and 1000A with a
process controller is dependent upon the ability of the PC
to handle the required signals.
PLC
INPUT
Most of the signals are +24 VDC or 48 VDC (positive
MODULE
and negative 24 VDC supplies for control), or +10 VDC for
+V
speed. You may also use computer generated frequency
signals for speed in the DIGITAL mode.
There are two types of input modules.
INPUT
A "sinking" connection uses the Programmable
Controller's own power, or an external source, and
COM
connects it (sinks it) to common level by the connected
input device. The drawing on the left illustrates the method
for using an open collector output to "sink" the input of a
+24 VDC PC input module using an external supply from
the drive.. When the transistor turns on, it turns on the
input module.
PLC
INPUT
MODULE
A "sourcing" connection turns on the PLC module by
supplying power to it. The second figure shows a sourcing
+V
connection. Notice, however, the inverted sense, that is,
when the transistor turns on, the input is not.
INPUT
You can use the fault output with connections similar
to those in the above figures. You can use a PLC input
module, with the FAULT output of the control at TB1
terminals 12 and 13, to sense a FAULT in the drive. The
COM
bottom figure illustrates this.
You need to keep in mind that the FAULT isolated
output transistor is "ON" when there is no fault present.
PLC
You should accomplish all of the programmable
INPUT
MODULE
controller operations of the standard control circuits of the
Models 1000 series controls with relays. These circuits
+V
see 24VDC to ground, but they operate at 48VDC. RUN,
JOG, STOP, and EMERGENCY STOP inputs operate on
+24 VDC supplies. The circuitry, however, actually
INPUT
operates between positive and negative supplies, and it is
difficult to make connections that do not involve both
power supplies.
COM
6/4/2001 © copyright 1997 by Powertec