Graco TI12552a, TI12553a - page 119

Alarm Troubleshooting

312779E 119

E-5: OVERDOSE A/B DOSE TOO SHORT ALARM and

E-6: OVERDOSE B/A DOSE TOO SHORT ALARM

E-5: the A dose overshoots and, when combined with B, is too large for the mix chamber capacity.

E-6: the B dose overshoots and forces an A side dose that, when combined with B, is too large for the mix chamber

capacity.

Cause Solution

Valve seal or needle/seat are leaking. Check F

IG

. 17

Totals Screen on page 26. If A and B are dosing simul-

taneously (sequential dosing only), there is a leak.

Repair the valve (see valve manual 312782).

Sampling valve is leaking. Tighten or replace valve.

Flow meter fluctuations caused by pressure pulsations. Check for pressure pulsations:

1. Close all the manifold valves.

2. Turn on the circulating pumps and all the booth

equipment (such as fans and conveyors).

3. Check if the ProMix 2KS is reading any fluid flow.

4. If the ProMix 2KS shows there is fluid flow and there

are no leaks from the gun or any other seals or fit-

tings, the flow meters are probably being affected by

pressure pulsations.

5. Close the fluid shutoff valve between the fluid supply

system and the flow meter. The flow indication

should stop.

6. If necessary, install pressure regulators or a surge

tank on the fluid inlets to the ProMix 2KS to reduce

the fluid supply pressure. Contact your Graco distrib-

utor for information.

Slow actuation of component A or B valves. See E-3: RATIO HIGH ALARM and E-4: RATIO LOW

ALARM, pages 117-118.

Running a high mix ratio and a high flow rate. It may be necessary to restrict the flow rate through the

component B dose valve by adjusting its hex nut (E). See

page 88.

Table 17. Alarm Troubleshooting

Contents

Main 312779E Operation ProMix 2KS Plural Component Proportioner 2312779E Contents Related Manuals Equipment Approvals System Configuration and Part Numbers System Configuration and Part Numbers Configured Part Number Wall Mount Fluid Station Configurator Key . 1: Identification Label, Wall Mount Fluid Station Systems Standard Features The pressure rating is based on the rating of the lowest rated fluid component. Example: System Configuration and Part Numbers RoboMix Fluid Station Configurator Key Configured Part Number . 2: Identification Label, RoboMix Fluid Station Systems Label Location on EasyKey Standard Features Accessories Warnings WARNING Important Two-Component Material Information Isocyanate Conditions Material Self-ignition Keep Components A and B Separate Moisture Sensitivity of Isocyanates Glossary of Terms Page Overview Usage Component Identification and Definition Page Wall Mount System Components * See the ProMix 2KS Repair-Parts manual for optional cable lengths. Page RoboMix System Components * See the ProMix 2KS Repair-Parts manual for optional cable lengths. Page EasyKey Display and Keyboard Display Right Arrow: Left Arrow: Down Arrow: AC Power Switch I/S Power Potlife Exceeded Audible Alarm Graco Web Interface Port Ethernet Connection Run Mode Screens Splash Screen Page Status Screen Manual Override Screen Manual Override Menu Flow Rate Range Flow Set Point Flow Control Calibration Totals Screen Reset Total Screen Reset Solvent Screen Alarms Screen Level Control Screen Setup Mode Password Screen Set Up Home Screen Page System Configuration Screens Configure Screen 1 Configure Screen 2 Configure Screen 3 Configure Screen 4 Example: Configure Screen 5 Configure Screen 6 Option Screens Option Screen 1 Verification Screen Option Screen 2 Advanced Setup Screens Advanced Setup Screen 1 Advanced Setup Screen 2 Advanced Setup Screen 3 Advanced Setup Screen 4 Advanced Setup Screen 5 Advanced Setup Screen 6 Advanced Setup Screen 7 Advanced Setup Screen 8 Recipe Setup Screens Recipe Setup Screen 1 Recipe Setup Screen 2 Recipe Setup Screen 3 Recipe Setup Screen 4 Recipe Setup Screen 5 Recipe Setup Screen 6 Recipe Setup Screen 7 Recipe 0 Screens Recipe 0 Screen 1 Recipe 0 Screen 2 Recipe 0 Screen 3 Recipe 0 Screen 4 Calibration Screen Page ProMix 2KS Integration Specifics Discrete I/O vs Network Communications Discrete I/O Digital Inputs maintained same color maintained JLS Digital Outputs Analog Inputs Automation Flow Charts Start Mix Mode Process . 65. Start Mix Mode Process Flow Chart . 65, Table 5, and Table 6. Mixing Mode Process . 66, Table 5, and Table 6. . 66. Mixing Mode Process Flow Chart Purge Mode Process . 67, Table 5, and Table 6. . 67. Purge Mode Process Flow Chart Color Change Mode Process . 68, Table 5, and Table 6. . 68. Color Change Mode Process Flow Chart Alarm Processing . 69, Table 5, Table 6, and Table 7. . 69. Alarm Processing Flow Chart Page Page Page Page Digital inputs tied together on the I/O board (see F . 64). Digital outputs tied together on the I/O board (see F . 64). Page Integrated Flow Control Flow Control Description Flow Control Components 249849 Flow Control Module 24H989 Flow Control Module Fluid and Air Pressure Requirements Back pressure will be required to ensure minimal fluid pressure at the lowest flow rate setpoint. Flow Control Operation Integrated Flow Control . 73. ProMix 2KS Flow Control Schematic Diagram (249849 Module) 312779E 69 . 74. ProMix 2KS Flow Control Schematic Diagram (24H989 Module) Flow Control Operating Process Example Operating Ranges Step 1: Flow Set Point Input Signal Step 2: Pressure Loop Step 3: Flow Loop . 75. ProMix 2KS Flow Control Pressure Loop and Flow Loop (249849 Module) 312779E 71 . 76. ProMix 2KS Flow Control Pressure Loop and Flow Loop (24H989 Module) Flow Control Setup Flow Control Startup Page Flow Control Calibration Mix Calibration Global FC Data Copy Continuous Learning Setting Ki and Kp Pressure Flow Control Mode Kp Ki Flow Control Troubleshooting Problem: Flow Command does not produce fluid output. For module 24H989: For module 249849: Page System Operation Typical PLC Interaction with ProMix 2KS Start Mixing Stop Mixing Color Change Purge Alarm Monitoring/Reset (Discrete I/O) except for the following condi- tions: stay loaded never cannot General Operating Cycle, Sequential Dosing Page General Operating Cycle, Dynamic Dosing Overview Dynamic Dosing System Parameters Select a Component B Restrictor Size Turn On Dynamic Dosing Balancing A/B Pressure Mix Manifold Valve Settings counter- clockwise clockwise. Start Up Page Shutdown Overnight Shutdown Service Shutdown Pressure Relief Procedure Single Color Systems Systems with Color Change and without Dump Valves Systems with Color/Catalyst Change and Dump Valves System Operation 312779E 93 . 104. Fluid Solenoids J1 J13 J12 J3 J9 J14 J15 J8 F2 F1 Page Purging There are 4 purging procedures in this manual: Purging Mixed Material Purging Using Recipe 0 Purging Fluid Supply System * Page Purging Sampling Valves and Tubes Solvent Push Feature Meter Calibration Page Color Change Color Change Procedures Multiple Color Systems Single Color Systems Color Purge/Dump Color Fill Catalyst Purge/Dump Catalyst Fill First Purge NOTES: . 118 and F . 124 (page 112) shows an External Color Change. . 120 and F . 121 show color change. If the color is not changing, disregard that portion of the chart. . 109: Color Change Chart 1 . 110: Color Change Chart 2 . 111: Color Change Chart 3 . 112: Color Change Chart 4 . 113: Color Change Chart 5 . 114: Color Change Chart 6 . 115: Color Change Chart 7 . 116: Color Change Chart 8 . 117: Color Change Chart 9 . 118: Color Change Chart 10 . 119: Color Change Chart 11 . 120: Color Change Chart 12 . 121: Color Change Chart 13 . 122: Color Change Chart 14 . 123: Color Change Chart 15 . 124: Color Change Chart 16 . 125: Color Change Chart 17 . 126: Color Change Chart 18 Page Alarms and Warnings System Alarms System Warnings To Reset Alarm and Restart Alarm Troubleshooting NOTICE A If the pressures are already about equal, A If the pressures are already about equal, Page Page Page Page Page Page Page Page 312779E 127 Schematic Diagrams CONTROL AIR PURGE AIR System Pneumatic Schematic System Electrical Schematic I/O HARNESSES CABLE Non-Hazardous Area NON-HAZARDOUS AREA System Electrical Schematic J10 J1 Hazardous Area HAZARDOUS AREA EasyKey Electrical Schematic VOLTAGE P1 COMMON (BLACK) +12 VDC I/S (WHITE) Meter Performance Data (G3000 on A and B) Meter Performance Data (G3000 on A, Coriolis on B) Technical Data Base system: Flow control: RoboMix system: Coriolis meter: Graco Standard Warranty Graco Information