Delta ASDA Series User Manual

Application Examples ASDA Series Application Note
3-108 March, 2015
Figure 3.8.8 Theorem of Cam Positioning
Parameters from P2-73 to P2-76 have the function of cam positioning. The followings detail the
description of each parameter.
Step 1: Set relevant settings of the input DI
The DI pin which connects to the sensor needs to be set to 0x35 (normally close) or 0x135
(normally open). And the DI will be therefore set to DI.ALGN which is for cam positioning only.
P2-75 is for setting the target position of cam positioning and can be observed by the pulse of
master axis. Take figure 3.8.9 as the example. When P5-83 = 1/P5-84 = 10000, the pulse
number of master axis the cam curve needs to travel for a cycle is 10000. If P2-75 is set to 5000,
when the system receives DI signal of cam positioning, the camshaft shall operate to the
corresponding position of 180°, or the system will adjust the position of camshaft automatically.
The setting range of P2-75 is from 0 (P5-84/P5-83) to -1. If the setting value is out of range,
entering value is not allowed and the error will be shown. If the entering value was within the
range but becomes out of range because of the modification of P5-83 or P5-84, value of P2-75
will be cleared to 0 automatically.
In order to overcome the switching delay of DI input signal, users can use P2-74 to set the delay
compensation. For preventing poor printing of mark and cause misreading of DI, users can use
P2-73.DC to setup the masking area. If DI.ALGN is triggered in masking area, the system will not
read this signal. Only if it is in the proper position (outside the masking area), is the system able
to read and calculate it for adjustment. Here is the masking calculation method which bases on
the percentage.
M >= (P5-84 / P5-83) X P2-73.DC%
This masking function only allows forward direction pulse. Reverse direction pulse will not be
able to work.
The current position of cam can be read from monitoring variable v03EH. When DI is triggered,
the system will compare the monitoring variable with the setting value of P2-75. If two values are
different, it will conduct cam positioning.

Delta ASDA Series Specifications

General

Control Modes	Position, Speed, Torque
Communication Interface	RS-485, CANopen, Modbus
Feedback	Incremental encoder, Absolute encoder
Protection	Overvoltage, Undervoltage, Overcurrent, Overtemperature
Power Supply	Single-phase or three-phase AC
Output Power	50W to 15kW (depending on the specific model within the series)