KRUEGER CRFF Owner's manual
CONTROL CONSOLE FOR CRFF SERIES
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
TABLE OF CONTENTS
Safety Precautions ............................................................................................................................................................ 3
Overview ............................................................................................................................................................................ 3
Specications...................................................................................................................................................................... 3
Installation ......................................................................................................................................................................... 4
Control Console Operation............................................................................................................................................... 8
Limited Warranty .............................................................................................................................................................. 11
3
CONTROL CONSOLE FOR CRFF SERIES
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
!
SAFETY PRECAUTIONS
Please read and save the following important
safety information regarding the ACC1-125
prior to unit operation.
To reduce the risk of re, 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 qualied person(s)
in accordance with all applicable codes and
standards, including re-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 eld. Returned equipment still
under warranty to Krueger.
• Before trying to remove the Control Console
from the clean system it controls, switch power
o 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.
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-conguring 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 conguration required.
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 lter 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
conguration selections are required.
CONTROL CONSOLE MODELS
4
CONTROL CONSOLE FOR CRFF SERIES
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
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 specied based
on the following.
A network is constructed by simply daisy-chaining
Krueger fan lter units via the universal control card of
each fan lter unit. Specic 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 lter unit, power can be applied. The
Control Console will automatically scan the network.
Each fan lter 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.
!
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
Figure 1: Control Panel
3.5” (89mm)
7.0”
(178mm)
INSTALLATIONSPECIFICATIONS (CONTINUED)
6
CONTROL CONSOLE FOR CRFF SERIES
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION (CONTINUED)
PLUG
IN
CLASS
2
TRANSFORMER
E135456
EGE
PRODUCTNO:100870
MODEL NO:DDU120100
INPUT :120VAC 60Hz 19W
OUTPUT:12VDC 1000mA
RoHS
MADE
IN
TAIWAN
R.O.C.
NOTE:
OUTPUT CORD:UL 2468 AWG#22
DC PLUG:5.50.2x 2.10.1x 11 0.5
CENTER:
48
±
2
17
±
1
6
.
35
±
0
.
3
1
.
5
±
0
.
1
12
.
7
±
0
.
5
58
2
CAUTION
RISK
OF
ELECTRIC
SHOCK
DRY
LOCATION
USE
ONLY
ATTENTION
POUR
UTILISATION
À
L’INTÉRIEUR
SEULEMENT
This power unit is intended to be correctly
orientated in a vertical or floor mount position
YYMM
DATE CODE
:
YYMM (YEAR/MONTH)
74
±
2
6FT MIN
.
11
0
.
5
2.1 0.1
5.5 0.2
±
ф±
ф±
ф±
±ф± ф±
Figure 2: Unit Label
Figure 3: Wall Plug Dimensional Information
Control Connections
FAN FILTER UNIT
CONTROL CONSOLE
WALL PLUG
DUAL RJ-45 JACKS
FOR CAT5 CABLE
CAUTION
RISK
OF
ELECTRIC
SHOCK
DRY
LOCATION
USE
ONLY
ATTENTION
POUR
UTILISATION
À
L’INTÉRIEUR
SEULEMENT
This
power
unit
is
intended
to
be
correctly
orientated in a vertical or floor mount position
YYMM
DAISY CHAIN
CONTROL CONSOLE POWER CONNECTIONS
The control console can be powered a plug-in
style wall adapter, or a dedicated circuit board.
1. Plug in wall adapter: P/N: 64114-001
2. Dedicated circuit board: P/N: 63973
7
CONTROL CONSOLE FOR CRFF SERIES
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
INSTALLATION (CONTINUED)
Figure 4: ACM1008 Jumpers
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 (ag) 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.
• 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 Standos
• 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)
CONTROL CONSOLE
3.00”
(76.3mm)
2.60”
(66.1mm)
2.20”
(56.0mm)
1.78”
(45.20mm)
FAN FILTER UNIT
DAISY CHAIN
CAT 5 TO CONTROL CONSOLE
Power
Jumper
Power
Jumper
24AC TRANSFORMER
SPECIFICATION
8
CONTROL CONSOLE FOR CRFF SERIES
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
CONTROL CONSOLE OPERATION
SELECTED
ADDRESS
STATUS OF
SELECTED
UNIT
SPEED OF
SELECTED
UNIT
ROTATE TO
SELECT UNIT
OR OPTION MENU
PUSH TO ENTER
OPTION MENU
ROTATE TO
ADJUST SPEED
OR OPTION
SETTINGS
Figure 5: 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 conrm 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 lter unit is detected, the Control Console
repeats the scan sequence until at least one unit is
found.
SCAN ADDRESS
NO. OF UNITS FOUND
NO EFFECT
NO EFFECT
Figure 6: Front Panel
Functions During Power-On
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.)
ADDRESS
SET SPEED
PRESSURE SWITCH STATUS
ANY ROTATION
TO EXIT STANDBY
MONITOR MODE
Figure 7: Standby Monitor
Mode Front Panel Functions
The Control Console polls each fan lter 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
“—“.
FRONT PANEL FEATURES
9
CONTROL CONSOLE FOR CRFF SERIES
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
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.
Figure 8: User Monitor
Mode Front Panel Functions
ADDRESS
SET SPEED
PRESSURE SWITCH STATUS
ROTATE TO SELECT ADDRESS. PRESS
TO LOCK SELECTION.
NO EFFECT
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.
Figure 9: User Adjust
Mode Front Panel Functions
ADDRESS
SET SPEED
PRESSURE SWITCH STATUS
ROTATE TO SELECT ADDRESS.
ADJUST SET SPEED UP OR DOWN
CONTROL CONSOLE OPERATION (CONTINUED)
10
CONTROL CONSOLE FOR CRFF SERIES
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
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 conrm 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
eect until High Speed is selected or the power is
cycled.
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.
CONTROL CONSOLE OPERATION (CONTINUED)
Figure 10: Option Menu Navigation
OP 01 02 50
HL A1 A2 A3 A4
LS Pr A11
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.
11
CONTROL CONSOLE FOR CRFF SERIES
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
CONTROL CONSOLE OPERATION (CONTINUED)
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 lter 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).
ACCESS LEVELS
To restrict access to functions other
than monitoring, the Control Console
implements access levels. Level A1
carries the greatest privileges.
1401 N. Plano Rd.
Richardson, TX 75081
tel: 972.680.9136
www.krueger-hvac.com
CRFF Series Wall Control Console IOM: 06/2023
©Krueger 2023. All Rights Reserved.
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your local Krueger representative or visit us on the web at www.krueger-hvac.com.
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