Advertisement
Quick Links
DESCRIPTION
The PID Software Kit consists of two EPROMs and this
instruction sheet. It allows the user to modify a "Low
Horsepower" rated GPD 503 drive so it will have PID
capability; that is, it will be able to regulate a controlled
variable such as speed, pressure, flow, etc., by
comparing a feedback signal to a reference signal. It
then performs the necessary calculations on the
difference between the two signals (error) in order to
compensate for the dynamic changes in the system.
After changing out the EPROMs to introduce the PID
algorithm into the GPD 503, some of the functions from
the standard EPROM set are no longer available. These
include:
• Frequency reference memory settings
An-05 through An-08
• Settings 0C and 05 for Sn-15 through Sn-18
• Slip compensation (bn-08, Cn-34, Cn-35).
The reference input and feedback input connections
needed for PID operation depend on whether or not the
AI-14B option card (Model No. DS387) is present.
Although the card is not a requirement for PID operation,
its presence allows greater flexibility of the reference
input connection.
The function of the GPD 503 control circuit with the PID
software in place can be understood by studying the
block diagrams in Figures 1, 2 or 3.
Figure 1 shows operation without the AI-14B card. The
reference (setpoint) is either an input signal at term. 16
or a memory setting (An-01 through An-04, or An-09).
The feedback input is at either terminal 13 or 14,
CHANGE RECORD
1 STD-5297 8-13-92
2 STD-5523 5-12-93
PID Software Kit
Part No. SK-PID1-L503
depending on the type of signal used. The feedback
signal is eventually subtracted from the reference signal
to produce an error signal. The PID algorithm processes
this error signal. The output from the PID algorithm
commands the drive to output a specific frequency.
Operation with the AI-14B card (Figures 2 & 3) is similar.
The reference (setpoint) input is either an input signal at
terminal 13, 14 or 16, or a memory setting (An-01 thru
An-04, or An-09). The feedback input is channel 1,
channel 2, and /or channel 3 of the AI-14B card.
INSTALLATION
1. Turn off all electrical power to drive.
2. Remove drive front cover. Verify that CHARGE
indicator lamp inside drive is off.
3. Use a voltmeter to verify power has been discon-
nected at incoming power terminals (L1, L2 & L3).
For GPD 503 Adjustable
Frequency Drives
CT: 1-30HP, 230V; 1-60HP, 460V
VT: 1-40HP, 230V; 1-75HP, 460V
CAUTION
This option contains electrostatic sensitive
devices. Personnel must be properly grounded
before removing and installing carton contents.
WARNING
Hazardous voltage can cause severe injury or death.
Lock all drive power sources in "OFF " position.
DWG. NO. 02Y00025-0346
SHEET NO. 1 OF 10
EFF. 6/12/92
( m - df )
Advertisement
Related Manuals for YASKAWA SK-PID1-L503
Summary of Contents for YASKAWA SK-PID1-L503
- Page 1 Frequency Drives CT: 1-30HP, 230V; 1-60HP, 460V VT: 1-40HP, 230V; 1-75HP, 460V PID Software Kit Part No. SK-PID1-L503 DESCRIPTION The PID Software Kit consists of two EPROMs and this depending on the type of signal used. The feedback instruction sheet. It allows the user to modify a "Low signal is eventually subtracted from the reference signal to produce an error signal.
- Page 2 SETPOINT (CLOSED LOOP) FREQ. REFERENCE (OPEN LOOP) Sn-13 INPUT Multi-step selection Sn-04 X X X X X X X X (by multi-function inputs) 0 - 10V An-01 Open Loop An-02 Fout Notes: An-03 1. When multi-function input is Closed Loop not used, drive operates in closed An-04 loop.
- Page 3 SETPOINT (CLOSED LOOP) FREQ. REFERENCE (OPEN LOOP) Sn-13 INPUT Multi-step selection Sn-04 X X X X X X X X (by multi-function inputs) 0 - 10V 4 - 20mA An-01 Open Loop Sn-19 = 0 0 - 10V Fout Notes: 0 <...
-
Page 4: Setpoint Input
OFFSET (CLOSED LOOP) FREQ. REFERENCE (OPEN LOOP) Sn-13 INPUT Multi-step selection Sn-04 X X X X X X X X (by multi-function inputs) 0 - 10V 4 - 20mA An-01 Open Loop An-02 Fout Notes: An-03 1. When multi-function input is Closed Loop not used, drive operates in closed An-04... -
Page 5: Pid Adjustments
INSTALLATION - Continued manual TM 4231 if not familiar with this procedure.) 2-Wire control is for maintained contact run/stop control; FRONT MAIN COVER CONTROL 3-Wire control is for momentary contact run/stop control. BOARD DIGITAL 7. Make changes to the constants to suit your application. OPERATOR Refer to programmable features descriptions in Section 2, or constant tables in Appendix 1 of the GPD technical... - Page 6 SIGNAL TRIM SETPOINT (closed loop) GPD 503 (2KΩ) +15 Vdc FREQUENCY (20mA MAX) REFERENCE (open loop) REF. IN 1RH* (0 TO 10Vdc) (2K / 2.5KΩ) SHIELD 4-20mA ISOLATED 4-20mA (250Ω) FEEDBACK (closed loop) Not Used 0 TO 10Vdc 0-10Vdc (open loop) (20KΩ) Figure 5.
- Page 7 PID CONSTANT SETTINGS All of these changes should be noted in your TM 4231. In addition, it may be helpful to also annotate those reference The following is a listing of changes in constants and paragraphs in Section 2 where the change in constant programmable features as a result of installing the PID definition or factory setting will have some effect.
- Page 8 for Page 2-25: Multi-step speed ref. 1 See paragraph 2.24 Multi-step speed ref. 2 Not Used Not Used for Page 2-26: Not Used Integral Value Reset Closed = Integral Value Reset Closed Loop / Open Loop Closed = Open Loop 67 to 6F Not Used for Page 2-30:...
- Page 9 for Page A1-2 (continued): bn-13 PID Feedback Signal Gain 0.01 0.00 - 10.00 1.00 bn-14 PID Proportional Gain 0.0 - 25.5 bn-15 PID Integral Time 0.1 s 0.0 - 999.9 10.0 bn-16 PID Derivative Time 0.01 s 0.00 - 1.00 0.00 bn-17 PID Output Offset...
- Page 10 for Page A1-4: Sn-06 Operation Mode XXXX 00 = S-curve at Accel/Decel,- 0000 2.27 Select 3 with 0.2 second delay 01 = S-curve at Accel/Decel disabled 10 = S-curve at Accel/Decel With 0.5 second delay S-curve at Accel/Decel with 1.0 second delay XXXX Auto signal input directly proportional...
Need help?
Do you have a question about the SK-PID1-L503 and is the answer not in the manual?
Questions and answers