LS ELECTRIC H100 Variable Speed Drive User Guide

LS ELECTRIC H100 Variable Speed Drive User Guide

Contents hide

1 Introduction

2 Step 1 – Transducer Identification and Wiring

3 Step 2 – Basic PID Parameter Setup

4 H100+ Step 3 – Commonly Set Parameters and Functions

5 Lost Feedback Detection

6 High/Low Feedback Detection

7 Thrust Bearing Control

8 Step 4 –Verifying Operation

9 Step 5 –PID Troubleshooting

10 Documents / Resources

10.1 References

11 Related Posts

Introduction

This quick start reference is meant to be a supplement to the User Manual included in the VFD packaging. This reference is a continuation to the H100+ “Basic Setup” quick start. It assumes proper motor and VFD protection features have been setup.

PID is a process loop used to control a process variable froma sensor(transducer) such as pressure or temperature. This reference guides the installer through the wiring and programming needed for a PID loop.

CAUTION!
Improper wiring and operation may result in serious personal injury or death.

Follow the recommended wiring practices suggested in this document as well as the User Manual. The minimum size of the protective earth (ground) conductor shall comply with local safety regulations and applicable codes.

Please review all H100+ relateddocuments included with the product before proceeding with any installation and wiring.

Step 1 – Transducer Identification and Wiring

Most transducers utilize a 4-20mA output and require a DC power source to work. Identify the specs on the transducers label or spec sheet to proceed. This is also important for verifying the range of the transducer.

Wiring

2 wire transducers (4-20mA)
“24V” is used to power the transducer.
“I2” is used for the 4-20mA input terminal from the transducer.
Polarity MUST be correct.

0-10VDC and 0-5VDC transducers
Utilize the “V1” terminal or “I2”.
Note: If using I2 for a voltage input set SW4 to the right. This sets “I2” up as “V2”.

Step 2 – Basic PID Parameter Setup

At initial power up the VFDs keypad will prompt the operator to go through the EZ Start. If “Yes” is selected, the first question is macro selection. “Pressure Control” is recommended for PID setup. If the EZ Start is bypassed, you may also set the macro at CNF43.

EZ Start

The Pressure Control macro enables PID and sets up a special User Group. Press the “Mode” key to get to the “U&M” display.

Review and adjust any necessary parameters listed below to get the basic PID loop setup.

MACROCode	Group	No	Description	Default	Setting options	Recommended Setting
17	PID	1	PID Selection ( Enables PID )	Yes	Yes/No	1 – Yes
18	PID	10	PID Reference selection	Keypad	# (0-6)	0- Keypad (typically)
19	PID	11	PID Reference 1	0 PSI(-100 to 100 PSI)	Based onfeedback scaling	SET THIS LAST
20	PID	20	PID Feedback Source	(3) = I2	# (0-9), refer to the LCD keypad.	Depends on the system requirement, typically “I2”. Refer to wiring done on step 1.
21	PID	25	PID P-Gain 1	100%	0 – 200%	Adjust as needed to improve performance.
22	PID	26	PID I-Time 1	2.00 Sec.	0 – 200 Sec.	Adjust as needed to improve performance.
24	PID	50	PID Unit Selection	PSI	0-41, refer tothe LCD keypad.	Set to the unit being controlled.
25	PID	51	PID Unit Scale Multiplier	x10	x0.01 up to x100	Depends on the system requirement
26	PID	53	PID Unit Fitting [MAX]	100 PSI	100 PSI	Set to the max transducer value. For example, 100PSI

H100+ Step 3 – Commonly Set Parameters and Functions

Listed below are commonly set parameters related to PID operation. These parameters are listed in both the U&M mode and standard PAR mode. Set accordingly based on the application requirements.

Sleep

PID-59 Sleep Level type
The following sleep level types can be selected:

Setting

Frequency (Factory Default)
Output Current
PID Feedback Value
RPM
Flow Rate

PID-62 PID Sleep 0 DT
PID-63 PID Sleep 0 Lev
If the operating frequency stays below the frequencies set at PID-63 for the set times at PID-62, the VFD enters standby mode.
PID-56 Pump Minimum Speed
Pump minimum speed sets the low limit on the command frequency. Minimum Limit operates based on the greatest value of following:
- AP2 40 Thrust Frequency, PID 56 Pump Minimum Speed, ADV 25 Freq Limit Lo

Wake-up

PID-57 Wake UpLev type
0. Absolute or 1. Deviation (Factory default) can be selected for the Wake-up level
PID-64 PID Wake Up 0 DT
PID-65 PID Wake Up 0Lev

Sets the reference for PID operation in PID sleep mode. PID operation resumes when PID feedback variation (from the PID reference) exceeds the values set in PID-65 for more than the time set in PID-64.

Lost Feedback Detection

Lost Feedback Detection shuts the pump down when the feedback is lost. The VFD can be set to take the action programmed in AP2-75.

AP2-75 LostFbkMode

Setting

None
Warning
Trip & Coast
Lost Preset

PRT-14 Lost Cmd Time
PRT-15 Lost Preset Frequency

High/Low Feedback Detection

Low/High feedback detection detects whether PID feedback is higher than high feedback level or lower than low feedback level to trigger Warning or Trip&Coast stop.

AP2-48 High Feedback Detection Mode
AP2-49 High Feedback Level Fault Delay Time
AP2-50 High Feedback Level
AP2-51 Low Feedback Mode
AP2-52 Low Feedback Level Fault Delay Time
AP2-53 Low Feedback Level
AP2-54 Hysteresis Level

Thrust Bearing Control

Thrust bearing control is commonly required on submersible pumps in order to protect the thrust bearing. This provides a fast accel and decel at lower speeds and applies to HAND and AUTO modes.

AP2-40 Thrust Frequency
AP2-41 Thrust Bearing Acceleration Time
AP2-42 Thrust Bearing Deceleration Time

Step 4 –Verifying Operation

The VFD must be in AUTO mode for PID to operate. Additionally, an active run command must be present. This is dependent on DRV06. The Pressure Control macro “pins” feedback and setpoint to the main monitor screen for easy viewing. Compare the Feedback monitor on the main screen to a mechanical gauge. See below examples.