KRUEGER CRFF Series Wall Control Console Instruction Manual
- June 17, 2024
- KRUEGER
Table of Contents
INSTALLATION, OPERATION & MAINTENANCE
CRFF SERIES WALL CONTROL CONSOLE
ACC1-125 (271668-002)
EC MOTORS
CONTROL CONSOLE FOR CRFF SERIES
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
WWW.KRUEGER-HVAC.COM
SAFETY PRECAUTIONS
Please read and save the following important safety information regarding the ACC1-125 prior to unit operation.
To reduce the risk of fire, electrical shock or injury to persons, observe the following:
- Installation work and electrical wiring for the Control Console and other clean system equipment must be done by a qualified person(s) in accordance with all applicable codes and standards, including fire-rated construction.
- When cutting or drilling into a wall or ceiling, do not damage electrical wiring or other hidden utilities.
- Service to the Control Console cannot be performed in the field. Returned equipment still under warranty to Krueger.
- Before trying to remove the Control Console from the clean system it controls, switch power off for the entire clean system at service panel and lock service panel to prevent power from being switched on accidentally, and follow proper procedures as necessary.
- Use this unit only in the manner intended by the manufacturer. If you have questions, please contact Krueger.
OVERVIEW
The Krueger Control Console combines intelligent speed control with industry
standard MODBUS® networking. The versatile design allows control of an array
of Krueger fan filter units with the installed universal control cards.
The console combines a user interface with MODBUS master capability so no
additional networking components are needed and no MODBUS knowledge is
necessary to install a network. Once the console has automatically scanned the
network, only a few simple configuration selections are required.
CONTROL CONSOLE MODELS
KRUEGER SERIES CONTROL CONSOLE
MODEL NO.| ADDRESSES| NO. OF CRFF-E UNITS
ACC1-125| 125| UP TO 125
MAIN FUNCTIONS
- Individual address speed adjustment.
- Global address speed adjustment.
- Global address set-back speed adjustment.
STANDARD FEATURES
- Control and monitor up to 125 FFUs
- Adjusts and displays setpoint and unit status
- Individual and global commands
- Self-configuring upon power up, plug and play
- Central monitoring of fault sensors
– Pressure drop on AC FFUs
– RPM drop on EC FFUs
BENEFITS
- Quick and easy system air balancing of Krueger Fan Filter Units.
- Global standby feature for energy savings.
- Simple set-up and wall-mount Control Console installation.
SPECIFICATIONS
-
7-segment LED display
-
Dual rotary enconders for selection and adjustment
-
Power supply provided
– Supply voltage: 8-13Vdc
– Typical supply current: 90mA -
Electrical Connections
– DC Power Connector: 2.1mm DC power jack
– RJ45 socket for MODBUS network -
No installer configuration required.
ELECTRICAL SPECIFICATIONS
- Supply Voltage: 8-13Vdc
- Typical Supply Current: 90 mA
- Network Transceivers: 2-wire, 1/8 Unit Load Type
- Operating Temperature: 0-40° Celsius (32-104°F) DC
- Power Connector: 2.1 mm DC Power Jack MODBUS
- Network: RJ45 Socket
Elevation and Dimensions
INSTALLATION
ELECTRICAL SPECIFICATIONS
The Krueger Control Systems are engineered for easy installation. However,
testing either before permanent installation or as the system is installed is
strongly recommended.
The Control Console can be wall installed in the cleanroom or at a remote
location; however, the maximum recommended distance from the beginning to the
end of the daisy chain should not exceed 800 linear feet.
NETWORK WIRING
Cabling shall be provided and installed by others.
Plenum rated CAT5 cabling is recommended and network cable requirements should
be specified based on the following.
A network is constructed by simply daisy-chaining Krueger fan filter units via
the universal control card of each fan filter unit. Specific network wiring
information can be found in the Krueger CRFF-E operation manuals.
Network cable requirements should be based on:
- Distance Between Nodes
- Total Network Length
- Noisy Electrical Environment
- Environmental Conditions
- Mechanical Issues
Once the Control Console has been connected to at least one fan filter unit,
power can be applied. The Control Console will automatically scan the network.
Each fan filter unit should be given a unique address within the Control
Console’s available address range (determined by model number.) The addresses
do not need to be contiguous, but contiguous addressing will make operator
functions easier.
CONTROL CONSOLE INSTALLATION TEMPLATE
CONTROL CONSOLE POWER CONNECTIONS
The control console can be powered a plug-in style wall adapter, or a
dedicated circuit board.
- Plug in wall adapter: P/N: 64114-001
- Dedicated circuit board: P/N: 63973
SPECIFICATION
- Output: 12VDC at 1 Amp
- AC Input Range: 14-28VAC
- DC Input Range: 18-40VDC
- Fault Protected
- Short-Circuit Protected
- Internally Current-Limited to 1.2A Installation
- LED Power Indication
- Simple Connections
- RJ45 for network
- ¼ “ Quick Connect for Transformer
- Open-frame PCB with Standoffs
- 0-40°C Operating Temperature
- Surge Protection for Power and Data Lines
- Dimensions: 2.20” x 3.00” x 1.45” (56 x 76.3 x 36.90 mm)
The ACM1008 should be used with a transformer which is suitable for the
environment and end application.
Transformers smaller than 12VA can be used provided that the 1 Amp load is
reduced proportionally. Check the jumpers behind the RJ45 connectors to be
sure power is going to the proper cable direction. Remove (flag) the 0.1”
jumper by the port you want to disable power (where there is more than one
ACM1008, ensure that each cable segment has only one power source).
The Green LED on each port connector will illuminate when power is applied. If
it does not, check for shorts in the CAT5 cabling and measure the 24VAC input
power.
The 0V power connection is normally linked to the mounting posts for
grounding. Cut JP3 to isolate the 0V power connection from ground. This may be
necessary to eliminate ground-loop currents in some installations where
multiple power supplies are used.
CONTROL CONSOLE OPERATION
FRONT PANEL FEATURES
POWER ON
At power-on, the Control Console displays a series of parameters including
model number on the three LED displays for about one second. The Control
Console then cycles all segments in display to confirm that the display is
functional. Once display cycling is complete, the Control Console then scans
all addresses valid for that model (10, 25 or 50.)
If no fan filter unit is detected, the Control Console repeats the scan
sequence until at least one unit is found.
STANDBY
MONITOR MODE
The Control Console immediately enters standby monitor mode at the conclusion
of power-on scanning. The Control Console remains in standby monitor mode
until one of the two dials are rotated. If the dials are not adjusted for a
period of 30 seconds, the Control Console will revert to standby monitor mode.
In standby monitor mode, the Control Console repeatedly polls all units
detected during power-on scanning. Unused motor addresses are skipped, but the
highest address must be within range of the Control Console model settings
(10, 25 or 50.)
The Control Console polls each fan filter
unit while displaying status information on each unit for about 2 seconds. The
following information is displayed:
MODBUS Address of Unit Monitored (Top LED)
Pressure Switch Status
- “PG” for Pressure Good.
- “PF” for Pressure Fault.
- If Pressure Switches are not enabled, the display will be blank.
- If the control console is in Low Speed Mode, then “LO” will be displayed instead of the pressure switch status.
Set Speed or Blank Display (Center LED)
- Displays set speed in percent.
- This value is read from MODBUS register 2.
Note: If no response is received, the middle and lower LED shall display “—“.
USER MONITOR MODE
If any dial activity is detected, the Control Console leaves standby monitor
mode and enters user monitor mode. In this mode, any unit can be selected by
rotating the Select dial.
Note: If the Select dial is moved past the valid address range, the
select display shows “OP.” Pushing the Select dial enters the Option Menu.
USER ADJUST MODE
This mode is identical to User Monitor mode, except that the set speed of any
motor can be adjusted.
If the Select dial is moved below the valid address range, the select display
shows “OP”. The current access level is also displayed. Pushing the Select
dial enters the Option Menu.
The Control Console writes the set speed as a percentage of the maximum speed
(0-99 %). If power fails, each Digital Speed Controller will run at the most
recent speed selected.
OPTION MENU
The option menu allows a user to perform the following functions:
- Change the access level by entering pass codes. (A1…A3)
- Select High Speed (normal) or Low Speed. (Global set back)
- Adjust the Low Speed set back.
- Select whether pressure switches are present or not.
- Set the speed for every node simultaneously.
Access Levels
- Use the Select Dial to display the new access level requested.
- Press the Select Dial.
- If the new level has fewer privileges, then no pass code is needed. The bottom LED will scroll through its seven LED segments to confirm the change.
- If a pass-code is needed, enter the two-number code on the Adjust Dial. Press the Adjust Dial to lock in the code.
- If the pass-code is correct, the bottom LED will scroll through its seven LED segments.
Selecting High or Low Speed (HL)
- This action requires access levels A1-A3.
- Rotate the Select dial to display “HL” in the center LED and press Select dial to lock in this option.
- Rotate the Adjust dial to select “HI” or “’LO”.
- If “HI” is selected the units shall run at their individually set speeds.
- If “LO” is selected, each unit will be set back by a global amount (see adjusting Low Speed below).
- If Low Speed is selected, this setting will remain in effect until High Speed is selected or the power is cycled.
ROTATE SELECT DIAL TO DISPLAY “OP” ON TOP LED.
PRESS SELECT DIAL TO ENTER OPTION MENU.
ROTATE SELECT DIAL TO DISPLAY
DESIRED OPTION IN THE CENTER LED. PUSH SELECT DIAL AGAIN TO EXIT OPTION MENU.
Figure 10: Option Menu Navigation
Adjusting Low Speed Set Back (LS)
- This action requires access levels A1-A2.
- Use the Select dial to display the “LS” menu option.
- Rotate the Adjust dial to vary the set-back percentage (0-99%).
Selecting Pressure Switch (Pr)
- The Pressure switch option should be enabled if Phase Controlled units have a pressure switch installed
- Rotate the Adjust dial to select:
“NC”: Normally closed.
(The switch opens if there is a pressure fault.)
“NO”: Normally open.
(The switch closes if there is a pressure fault.)
“ ”: No pressure switch.
Global Speed Set (All)
- This is available only when operating at Access Level 1.
- Rotate the Adjust dial to set the desired speed.
- Press the Adjust dial to set every node to that speed.
ACCESS LEVELS
To restrict access to functions other than monitoring, the Control Console
implements access levels. Level A1 carries the greatest privileges.
| ACCESS LEVEL | PASS CODE | DESCRIPTION |
|---|---|---|
| A1 | 12 88 | OPERATOR CAN ADJUST CONFIGURATION SETTINGS. |
| A2 | 25 75 | OPERATOR CAN USE ALL FUNCTIONS FOR MONITORING AND CONTROL. |
| A3 | 49 51 | OPERATOR CAN MONITOR AND ADJUST HIGH/LOW SETTINGS. |
| A4 | N/A | OPERATOR CAN ONLY MONITOR STATUS OF THE NETWORK. |
LIMITED WARRANTY
Krueger warrants the equipment will be free of defects in materials and
workmanship under normal use for a period of one (1) year. The HEPA filter
shall only be warranted against loading for a period of one (1) year when
operated in clean room conditions. Krueger’s sole obligation under this
warranty is to repair or replace any parts of the equipment which are
defective for a period of one (1) year from the invoice date, provided that
the repair or replacement is actually performed within the one (1) year period
from the invoice date. The buyer agrees to assume any incidental expenses
including, but not limited to, the cost of transporting the defective
equipment to Krueger’s repair facility. The buyer’s sole remedy under this
limited warranty is the repair or replacement of any defec tive part of the
equipment.
KRUEGER DISCLAIMS ANY IMPLIED WARRANTIES INCLUDING WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL
KRUEGER BE LIABLE FOR PUNITIVE, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THIS SALE, INCLUDING, BUT NOT LIMITED TO DAMAGE TO A PERSONS OR
PROPERTY, LOSS OF USE, LOSS OF TIME, INCONVENIENCE, EQUIPMENT RENTAL, LOSS OF
EARNINGS OR PROFIT OR ANY OTHER COMMERCIAL LOSS. THIS WARRANTY EXCLUDES
CERTAIN EXPENDABLE ITEMS SUCH AS PREFILTERS, ETC. KRUEGER EXPRESSLY DISCLAIMS
AND EXCLUDES FROM THE WARRANTY ANY RESPONSIBILITY FOR EQUIPMENT FAILURES
AND/OR DEFECTS ATTRIBUTABLE TO IMPROPER MAINTENANCE, ABUSE, ACCIDENT OR
MODIFICATION OF EQUIPMENT (SUCH AS APPLICATION OF AN ADJUSTABLE FREQUENCY
DRIVE).
CONNECT WITH US!
YOUR RESOURCE FOR AIR DISTRIBUTION AND EQUIPMENT SOLUTIONS
Let us know how we can assist you in your next building application. For
more information, contact your local Krueger representative or visit us on the
web at www.krueger-hvac.com.
CRITICAL ROOM SOLUTIONS
AIR CLEANERS
CHILLED BEAMS
DISPLACEMENT VENTILATION| TERMINAL UNITS
Single Duct
Fan Powered
Dual Duct
Bypass & Retrofit
FAN COILS & BLOWER COILS
Horizontal
Vertical / Stack| DIFFUSERS
Plaque & Architectural
Louvered
Perforated
Modular Core
Linear Slot
Plenum Slot
Round
Air Nozzles| GRILLES & REGISTERS
Supply
Return
Linear Bar
Security
Industrial
Duct Mounted
Transfer
Stainless Steel
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1401 N. Plano Rd.
Richardson, TX 75081
tel: 972.680.9136
www.krueger-hvac.com
[email protected]
CRFF Series Wall Control Console IOM: 06/2023
©Krueger 2023. All Rights Reserved.
Documents / Resources
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KRUEGER CRFF Series Wall Control
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[pdf] Instruction Manual
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Console, Console
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