Omega Engineering PAX-1/8 User manual

1
O6-DIGIT 0.56" RED SUNLIGHT READABLE DISPLAY
O4 SEPARATE DISPLAYS (Timer, C unter, Real-Time Cl ck, and Date)
OCYCLE COUNTING CAPABILITY
OPROGRAMMABLE FUNCTION KEYS/USER INPUTS
OFOUR SETPOINT ALARM OUTPUTS (W/Plug-in card)
OCOMMUNICATIONS AND BUS CAPABILITIES (W/Plug-in card)
OBUS CAPABILITIES: DEVICENET, MODBUS and PROFIBUS-DP
OPC SOFTWARE AVAILABLE FOR METER CONFIGURATION
ONEMA 4X/IP65 SEALED FRONT BEZEL
GENERAL DESCRIPTION
The PAXTM (PAX Timer) and PAXCK (PAX Clock/Timer) offer many
features and performance capabilities to suit a wide ran e of industrial
applications. Both can function as an Elapsed Timer or Preset Timer, while the
PAXCK also offers Real-Time Clock with Date capability. The Plu -in option
cards allow the opportunity to confi ure the meter for the present application,
while providin easy up rades for future needs.
Both units can function as an Elapsed Time Indicator. By usin two separate
si nal inputs and 23 selectable timer ran es, the meters can be pro rammed to
meet most any timin application. With the addition of a Plu -in Setpoint card,
they can easily become a dual or quad output preset timer.
The PAXCK can also operate as a Real-Time Clock (RTC), with the Real-
Time Clock Card already installed. The meter is capable of displayin time in
12 or 24-hour time formats. The 12-hour format can be displayed in hours and
minutes, with or without an AM/PM indication or in hours, minutes, and
seconds. The 24-hour format can be displayed in hours and minutes or in hours,
minutes, and seconds. The PAXCK is also capable of a calendar display in
which the day, month and/or year can be displayed. The meter will reco nize
leap years, and can automatically adjust for Dayli ht Savin s Time. The Real-
Time Clock has the ability to externally synchronize with other PAXCK meters
to provide a uniform display network throu hout the plant.
If the application calls for both a Preset Timer and a Real-Time Clock at the
same time, the PAXCK can handle this requirement as well. The meter provides
up to four different displays, accessed via front panel push buttons or external
inputs. The displays are Timer (TMR), which displays the current timer value;
Count (CNT), which displays the current cycle counter value; Date (DAT),
which displays the current pro rammed date; and Real-Time Clock, which
displays the current time. A battery-backed Real-Time Clock plu -in card is
provided with the PAXCK. This card, which includes a lithium coin-cell battery,
will maintain the time and date when main power is removed.
The meters accept inputs from a variety of sources includin switch contacts
and outputs from CMOS or TTL circuits. The input can be confi ured to tri er
on the ed e or level of the incomin pulse. Internal jumpers are available to allow
the selection for sinkin inputs (active low) or sourcin inputs (active hi h).
The front panel keys and three user inputs are pro rammable to perform
various meter functions. One of the functions includes exchan in parameter
lists, allowin for two separate listin s of setpoint values, timer start/stop
values, counter start/stop values and RTC daily on and off values.
The meters can have up to four setpoint outputs, determined by the optional
plu -in cards. The setpoint plu -in cards provide dual FORM-C relays (5A),
quad FORM-A relays (3A) or either quad sinkin or quad sourcin open
collector lo ic outputs. The outputs can be assi ned to the timer, counter, RTC
date, and RTC time. The outputs can also be independently confi ured to suit a
variety of control and alarm requirements.
Plu -in cards can also provide serial communications. These include RS232,
RS485, Modbus, DeviceNet, and Profibus-DP. Display values, setpoint alarm
values and setpoint states can be controlled throu h serial communications.
With the RS232 or RS485 communication card installed, it is possible to
confi ure the meter usin a Windows®based pro ram. The meter confi uration
data can be saved to a file for later recall.
Once the meters have been initially confi ured, the parameter list may be
locked out from further modification entirely, or the setpoint, timer start/stop
values, counter start/stop values, RTC time SET, and Display Intensity can be
made accessible. This lockout is possible throu h a security code or user input.
The meters have been specifically desi ned for harsh industrial environments.
With a NEMA 4X/IP65 sealed bezel and extensive testin to meet CE
requirements, the meter provides a tou h yet reliable application solution.
SAFETY SUMMARY
All safety related re ulations, local codes and instructions that appear in this
literature or on equipment must be observed to ensure personal safety and to
prevent dama e to either the instrument or equipment connected to it. If
equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.
Do not use this unit to directly command motors, valves, or other actuators
not equipped with safe uards. To do so can be potentially harmful to persons or
equipment in the event of a fault to the unit.
MODEL PAX-1/8 DIN PRESET TIMER (PAXTM) &
REAL-TIME CLOCK (PAXCK)
Bulletin No. PAXCK-D
Drawing No. LP0524
Released 1 04
Tel [phone]
Fax [phone]
www.redlion.net
CAUTION: Read omplete
instru tions prior to installation
and operation of the unit.
CAUTION: Risk of ele tri sho k.
DIMENSIONS In in hes (mm) Note: Recommended minimum clearance (behind the panel) for mounting
clip installation is 2.1" (53.4) x 5" (127) W.
CUS LISTED
UL
R
IND. CONT. EQ.
51EB

2
Ordering Information . . . . . . . . . . . . . . . . . . . 2
General Meter Specifications . . . . . . . . . . . . 3
Optional Plug-In Cards and Accessories . . . . 4
Installing the Meter . . . . . . . . . . . . . . . . . . . . 5
Setting the Jumpers . . . . . . . . . . . . . . . . . . . 5
Installing Plug-In Cards. . . . . . . . . . . . . . . . . 6
Wiring the Meter . . . . . . . . . . . . . . . . . . . . . . 6
Reviewing the Front Buttons and Display . . . 9
Programming the Meter . . . . . . . . . . . . . . . 10
Factory Service Operations. . . . . . . . . . . . . 25
Programming Overview. . . . . . . . . . . . . . . . 28
TABLE OFCONTENTS
ORDERING INFORMATION
Meter Part Numbers
Option Card and A essories Part Numbers
SFPAX
PAXCDC40
PAXCDC4C
PAXCDC50
PAXRTC00
PC Configuration Software for Windows 3.x and 95/98 (3.5" disk)
Modbus Communications Card
Extended Modbus Communications Card with Dual RJ11 Connector
Profibus-DP Communications Card
Real-Time Clock Card (Replacement Only)
SFPAX*
PAXRTC
A essories
PAXCDC20RS232 Serial Communications Output Card with Terminal Block
Optional
Plug-In
Cards
PAXCDC30
PAXCDC2C
DeviceNet Communications Card (Terminal Block)
Extended RS232 Serial Communications Output Card with 9 Pin D Connector
PAXCDC1C
PAXCDC10RS485 Serial Communications Output Card with Terminal Block
PAXCDC
PAXCDS40Quad Setpoint Sourcing Open Collector Output Card
PAXCDS30Quad Setpoint Sinking Open Collector Output Card
PAXCDS20Quad Setpoint Relay Output Card
TYPE
PAXCDS10Dual Setpoint Relay Output Card
PAXCDS
PART NUMBERSDESCRIPTIONMODEL NO.
PAX 0
CK - Timer/Real Time Clo k
0 - Red, Sunlight Readable Display
1 - Green Display
0 - 85 to 250 VAC
1 - 11 to 36 VDC, 24 VAC
TM - Timer
*Software can be downloaded from www.redlion.net
Extended RS485 Serial Communications Output Card with Dual RJ11 Connector

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GENERAL METER SPECIFICATIONS
1. DISPLAY: 6 di it, 0.56" (14.2 mm) red sunli ht readable or standard reen
LED
2. POWER:
AC Versions (PAXCK000, PAXTM000):
AC Power: 85 to 250 VAC, 50/60 Hz, 18 VA
Isolation: 2300 Vrms for 1 min. to all inputs and outputs. (300 V workin )
DC Versions (PAXCK010, PAXTM010):
DC Power: 11 to 36 VDC, 14 W
(Derate operatin temperature to 40°C if operatin <15 VDC and three
Plu -in cards are installed)
AC Power: 24 VAC, ± 10%, 50/60 Hz, 15 VA
Isolation: 500 Vrms for 1 min. to all inputs and outputs (50 V workin )
3. SENSOR POWER: 12 VDC, ±10%, 100 mA max. Short circuit protected.
4. ANNUNCIATORS:
5. KEYPAD: 3 pro rammable function keys, 5 keys total.
6. TIMER DISPLAY:
Timer Ran e: 23 Selectable Ran es
Timin Accuracy: ± 0.01%
Minimum Di it Resolution: 0.001 Sec.
Maximum Least Si nificant Di it Resolution: 1 Hr.
Maximum Display: 999999
7. CYCLE COUNTER DISPLAY:
Counter Ran e: 0 to 999999
Di it Resolution: 1 cycle
Maximum Count Rate: 50 Hz
8. REAL-TIME/DATE DISPLAY (PAXCK):
Real-Time Display: 5 display formats
Hr/Min/Sec (12 or 24 Hr. format); Hr/Min (24 Hr.); Hr/Min (12 Hr. with
or without AM/PM indication)
Date Display: 7 display formats
Month/Day or Day/Month (numeric or 3-letter Month format);
Month/Day/Year or Day/Month/Year (all numeric);
Day of Week/Day (3-letter Day of Week format)
9. REAL-TIME CLOCK CARD: Field replaceable plu -in card
Time Accuracy: ± 5 secs./Month (1 min./year) with end-user calibration
Battery: Lithium 2025 coin cell
Battery Life Expectancy: 10 yrs. typical
Synchronization Interface: Two-wire multi-drop network (RS485 hardware),
32 units max., operates up to 4000 ft.
Isolation To Timer & User Input Commons: 500 Vrms for 1 min.
Workin Volta e: 50 V. Not isolated from all other commons.
10. TIMER INPUTS A and B:
Lo ic inputs confi urable as Current Sinkin (active low) or Current
Sourcin (active hi h) via a sin le plu jumper.
Current Sinkin (active low): VIL = 0.9 V max., 22K:pull-up to +12 VDC.
Current Sourcin (active hi h): VIH = 3.6 V min., 22K:pull-down, Max.
Continuous Input: 30 VDC.
Timer Input Pulse Width: 1 msec min.
Timer Start/Stop Response Time: 1 msec max.
Filter: Software filterin provided for switch contact debounce. Filter
enabled or disabled throu h pro rammin .
If enabled, filter results in 50 msec start/stop response time for successive
pulses on the same input terminal.
11. USER INPUTS: Three pro rammable user inputs
Lo ic inputs confi urable as Current Sinkin (active low) or Current
Sourcin (active hi h) throu h a sin le plu jumper.
Current Sinkin (active low): VIL = 0.9 V max., 22K:pull-up to +12 VDC.
Current Sourcin (active hi h): VIH = 3.6 V min., 22K:pull-down, Max.
Continuous Input: 30 VDC.
Isolation To Timer Input Common: Not isolated
Response Time: 10 msec
12. MEMORY: Non-volatile E2PROM retains all pro rammin parameters and
display values.
13. ENVIRONMENTAL CONDITIONS:
Operatin Temperature Ran e: 0 to 50°C (0 to 45°C with all three plu -in
cards installed)
Stora e Temperature Ran e: -40 to 60°C
Operatin and Stora e Humidity: 0 to 85% max. RH non-condensin
Altitude: Up to 2000 meters
14. CERTIFICATIONS AND COMPLIANCE:
SAFETY
UL Reco nized Component, File # E179259, UL3101-1, CSA C22.2 No.
1010-1
Reco nized to U.S. and Canadian requirements under the Component
Reco nition Pro ram of Underwriters Laboratories, Inc.
UL Listed, File # E137808, UL508, CSA C22.2 No. 14-M95
LISTED by Und. Lab. Inc. to U.S and Canadian safety standards
Type 4X Enclosure ratin (Face only), UL50
IECEE CB Scheme Test Certificate # UL/5854B/UL
CB Scheme Test Report # 02ME04503-04122002
Issued by Underwriters Laboratories, Inc.
IEC 1010-1, EN 61010-1: Safety requirements for electrical equipment
for measurement, control, and laboratory use, Part 1.
IP65 Enclosure ratin (face only), IEC 529
IP20 Enclosure ratin (rear of unit), IEC 529
ELECTROMAGNETIC COMPATIBILITY
Note:
Refer to the EMC Installation Guidelines section for more information.
15. CONNECTIONS: Hi h compression, ca e-clamp terminal block
Wire Strip Len th: 0.3" (7.5 mm)
Wire Ga e: 30-14 AWG copper wire
Torque: 4.5 inch-lbs (0.51 N-m) max.
16. CONSTRUCTION: This meter is rated for NEMA 4X/IP65 outoor use.
IP20 Touch safe. Installation Cate ory II, Pollution De ree 2. One piece
bezel/case. Flame resistant. Synthetic rubber keypad. Panel asket and
mountin clip included.
17. WEIGHT: 10.1 oz. (286 )
Power mains class B
Enclosure class BEN 55022RF interference
E issions to EN 50081-1
150 KHz - 80 MHz
Level 3; 10 V/rms EN 61000-4-6RF conducted interference
Level 3; 2 Kv power
Level 4; 2 Kv I/OEN 61000-4-4Fast transients (burst)
80 MHz - 1 GHz
Level 3; 10 V/m EN 61000-4-3Electroma netic RF fields
Level 3; 8 Kv airEN 61000-4-2Electrostatic dischar e
I unity to EN 50082-2
Setpoint 4 OutputSP4 -
Setpoint 3 OutputSP3 -
Setpoint 2 OutputSP2 -
Setpoint 1 OutputSP1 -
Real-Time Clock Time Display-
Real-Time Clock Date DisplayDAT -
Cycle Counter DisplayCNT -
Timer DisplayTMR -

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OPTIONAL PLUG-IN CARDS AND ACCESSORIES
WARNING: Dis onne t all power to the unit before
installing Plug-in ards.
Adding Option Cards
The PAX and MPAX series meters can be fitted with up to three optional plu -
in cards. The details for each plu -in card can be reviewed in the specification
section below. Only one card from each function type can be installed at one time.
The function types include Setpoint Alarms (PAXCDS), Communications
(PAXCDC), and Real-Time Clock Card (PAXRTC). The plu -in cards can be
installed initially or at a later date.
COMMUNICATION CARDS (PAXCDC)
A variety of communication protocols are available for the PAX and MPAX
series. Only one of these cards can be installed at a time. When pro rammin
the unit via RLCPro, a Windows®based pro ram, the RS232 or RS485 Cards
must be used.
SERIAL COMMUNICATIONS CARD
Type: RS485 or RS232
Isolation To Sensor & User Input Co ons: 500 Vrms for 1 min.
Workin Volta e: 50 V. Not Isolated from all other commons.
Data: 7/8 bits
Baud: 300 to 19,200
Parity: No, Odd or Even
Bus Address: Selectable 0 to 99, Max. 32 meters per line (RS485)
Trans it Delay: Selectable for 2 to 50 msec or 50 to 100 msec (RS485)
DEVICENET™ CARD
Co patibility: Group 2 Server Only, not UCMM capable
Baud Rates: 125 Kbaud, 250 Kbaud, and 500 Kbaud
Bus Interface: Phillips 82C250 or equivalent with MIS wirin protection per
DeviceNet™ Volume I Section 10.2.2.
Node Isolation: Bus powered, isolated node
Host Isolation: 500 Vrms for 1 minute (50 V workin ) between DeviceNet™
and meter input common.
MODBUS CARD
Type: RS485; RTU and ASCII MODBUS modes
Isolation To Sensor & User Input Co ons: 500 Vrms for 1 minute.
Workin Volta e: 50 V. Not isolated from all other commons.
Baud Rates: 300 to 38,400.
Data: 7/8 bits
Parity: No, Odd, or Even
Addresses: 1 to 247.
Trans it Delay: Pro rammable; See Transmit Delay explanation.
PROFIBUS-DP CARD
Fieldbus Type: Profibus-DP as per EN 50170, implemented with Siemens
SPC3 ASIC
Confor ance: PNO Certified Profibus-DP Slave Device
Baud Rates: Automatic baud rate detection in the ran e 9.6 Kbaud to 12 Mbaud
Station Address: 0 to 126, set by the master over the network. Address stored
in non-volatile memory.
Connection: 9-pin Female D-Sub connector
Network Isolation: 500 Vrms for 1 minute (50 V workin ) between Profibus
network and sensor and user input commons. Not isolated from all other
commons.
PROGRAMMING SOFTWARE
The SFPAX is a Windows®based pro ram that allows confi uration of the
PAX meter from a PC. Usin the SFPAX makes it easier to pro ram the PAX
meter and allows savin the PAX pro ram in a PC file for future use. On-line
help is available within the software. A PAX serial plu -in card is required to
pro ram the meter usin the software.
SETPOINT CARDS (PAXCDS)
The PAX and MPAX series has 4 available setpoint alarm output plu -in
cards. Only one of these cards can be installed at a time. (Lo ic state of the
outputs can be reversed in the pro rammin .) These plu -in cards include:
PAXCDS10 - Dual Relay, FORM-C, Normally open & closed
PAXCDS20 - Quad Relay, FORM-A, Normally open only
PAXCDS30 - Isolated quad sinkin NPN open collector
PAXCDS40 - Isolated quad sourcin PNP open collector
DUAL RELAY CARD
Type: Two FORM-C relays
Isolation To Ti er & User Input Co ons: 2300 Vrms for 1 min.
Workin Volta e: 240 Vrms
Contact Rating:
One Relay Ener ized: 5 amps @ 120/240 VAC or 28 VDC (resistive load),
1/8 HP @120 VAC, inductive load
Total current with both relays ener ized not to exceed 5 amps
Life Expectancy: 100 K cycles min. at full load ratin . External RC snubber
extends relay life for operation with inductive loads
Response Ti e: 5 msec. nominal with 3 msec. nominal release
Ti ed Output Accuracy: ±0.01% -10 msec.
QUAD RELAY CARD
Type: Four FORM-A relays
Isolation To Ti er & User Input Co ons: 2300 Vrms for 1 min.
Workin Volta e: 250 Vrms
Contact Rating:
One Relay Ener ized: 3 amps @ 250 VAC or 30 VDC (resistive load), 1/10
HP @ 120 VAC, inductive load
Total current with all four relays ener ized not to exceed 4 amps
Life Expectancy: 100K cycles min. at full load ratin . External RC snubber
extends relay life for operation with inductive loads
Response Ti e: 5 msec. nominal with 3 msec. nominal release
Ti ed Output Accuracy: ±0.01% -10 msec.
QUAD SINKING OPEN COLLECTOR CARD
Type: Four isolated sinkin NPN transistors.
Isolation To Ti er & User Input Co ons: 500 Vrms for 1 min.
Workin Volta e: 50 V. Not Isolated from all other commons.
Rating: 100 mA max @ VSAT = 0.7 V max. VMAX = 30 V
Response Ti e: 400 µsec. nominal with 2 msec. nominal turnoff
Ti ed Output Accuracy: ±0.01% -10 msec.
QUAD SOURCING OPEN COLLECTOR CARD
Type: Four isolated sourcin PNP transistors.
Isolation To Ti er & User Input Co ons: 500 Vrms for 1 min.
Workin Volta e: 50 V. Not Isolated from all other commons.
Rating: Internal supply: 24 VDC ± 10% , 30 mA max. total
External supply: 30 VDC max., 100 mA max. each output
Response Ti e: 400 µsec. nominal with 2 msec. nominal turnoff
Ti ed Output Accuracy: ±0.01% -10 msec.
PAXCDC50 - Profibus-DP
PAXCDC4C - Modbus (Connector)
PAXCDC40 - Modbus (Terminal)
PAXCDC30 - DeviceNetPAXCDC10 - RS485 Serial (Terminal)
PAXCDC1C - RS485 Serial (Connector)
PAXCDC20 - RS232 Serial (Terminal)
PAXCDC2C - RS232 Serial (Connector)

5
Installation
The meter meets NEMA 4X/IP65 requirements for indoor use when properly
installed. The meter is intended to be mounted into an enclosed panel. Prepare
the panel cutout to the dimensions shown. Remove the panel latch from the
meter. Slide the panel asket over the
rear of the meter to the back of the
bezel. The meter should be
installed fully assembled.
Insert the meter into the
panel cutout.
While holdin the meter in place, push the panel latch over the rear of the
meter so that the tabs of the panel latch en a e in the slots on the case. The
panel latch should be en a ed in the farthest forward slot possible. To achieve
a proper seal, ti hten the latch screws evenly until the meter is snu in the panel
(Torque to approximately 7 in-lbs [79N-cm]). Do not over-ti hten the screws.
Installation Environment
The meter should be installed in a location that does not exceed the operatin
temperature and provides ood air circulation. Placin the meter near devices
that enerate excessive heat should be avoided.
The bezel should only be cleaned with a soft cloth and neutral soap product.
Do NOT use solvents. Continuous exposure to direct sunli ht may accelerate
the a in process of the bezel.
Do not use tools of any kind (screwdrivers, pens, pencils, etc.) to operate the
keypad of the meter.
PANEL CUT-OUT
1.0 INSTALLING THE METER
2.0 SETTING THE JUMPERS
To access the jumpers, remove the meter base from the meter case by firmly
squeezin and pullin back on the side rear fin er tabs. This should lower the
latch below the case slot (which is located just in front of the fin er tabs). It is
recommended to release the latch on one side, then start the other side latch.
Warning: Exposed line volta e exists on the circuit boards. Remove
all power to the meter and load circuits before accessin inside of
the meter.
Timer Input Logi Jumper
One jumper is used for the lo ic state of both timer inputs. Select the proper
position to match the input bein used.
User Input Logi Jumper
One jumper is used for the lo ic state of all user inputs. If the user inputs are
not used, it is not necessary to check or move this jumper.
JUMPER SELECTIONS
The indicates factory settin .
Main
Cir uit
Board
USER
INPUT
JUMPER
SRC SNK
TIMER
INPUT
JUMPER
SRC SNK

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3.0 INSTALLING PLUG-INCARDS
The Plu -in cards are separately purchased optional cards that perform
specific functions. These cards plu into the main circuit board of the meter. The
Plu -in cards have many unique functions when used with the meters.
CAUTION: The Plu -in card and main circuit board contain static
sensitive components. Before handlin the cards, dischar e static
char es from your body by touchin a rounded bare metal
object. Ideally, handle the cards at a static controlled clean
workstation. Also, only handle the cards by the ed es. Dirt, oil or
other contaminants that may contact the cards can adversely
affect circuit operation.
To Install:
1. With the case open, locate the Plu -in card connector for the card type to be
installed. The types are keyed by position with different main circuit board
connector locations. When installin the card, hold the meter by the rear
terminals and not by the front display board.*
2. Install the Plu -in card by ali nin the card terminals with the slot bay in the
rear cover. Be sure the connector is fully en a ed and the tab on the Plu -in
card rests in the ali nment slot on the display board.
3. Slide the meter base back into the case. Be sure the rear cover latches fully
into the case.
4. Apply the Plu -in card label to the bottom side of the meter. Do Not Cover
the vents on the top surface of the meter. The surface of the case must be
clean for the label to adhere properly. Apply the label to the area desi nated
by the lar e case label.
TOP VIEW
Quad Sour ing Open Colle tor Output Card Supply Sele t
* If installin the Quad sourcin Plu -in Card (PAXCDS40), set the jumper for
internal or external supply operation before continuin .
WIRING OVERVIEW
Electrical connections are made via screw-clamp terminals located on the
back of the meter. All conductors should conform to the meter’s volta e and
current ratin s. All cablin should conform to appropriate standards of ood
installation, local codes and re ulations. It is recommended that the power
supplied to the meter (DC or AC) be protected by a fuse or circuit breaker.
When wirin the meter, compare the numbers embossed on the back of the
meter case a ainst those shown in wirin drawin s for proper wire position.
Strip the wire, leavin approximately 0.3" (7.5 mm) bare lead exposed (stranded
wires should be tinned with solder.) Insert the lead under the correct screw-
clamp terminal and ti hten until the wire is secure. (Pull wire to verify
ti htness.) Each terminal can accept up to one #14 AWG (2.55 mm) wire, two
#18 AWG (1.02 mm), or four #20 AWG (0.61 mm).
EMC INSTALLATION GUIDELINES
Althou h this meter is desi ned with a hi h de ree of immunity to Electro-
Ma netic Interference (EMI), proper installation and wirin methods must be
followed to ensure compatibility in each application. The type of the electrical
noise, source or couplin method into the meter may be different for various
installations. The meter becomes more immune to EMI with fewer I/O
connections. Cable len th, routin , and shield termination are very important
and can mean the difference between a successful or troublesome installation.
Listed below are some EMC uidelines for successful installation in an
industrial environment.
1. The meter should be mounted in a metal enclosure, which is properly
connected to protective earth.
2. Use shielded (screened) cables for all Si nal and Control inputs. The shield
(screen) pi tail connection should be made as short as possible. The
connection point for the shield depends somewhat upon the application.
Listed below are the recommended methods of connectin the shield, in order
of their effectiveness.
a. Connect the shield only at the panel where the unit is mounted to earth
round (protective earth).
b. Connect the shield to earth round at both ends of the cable, usually when
the noise source frequency is above 1 MHz.
c. Connect the shield to common of the meter and leave the other end of the
shield unconnected and insulated from earth round.
3. Never run Si nal or Control cables in the same conduit or raceway with AC
power lines, conductors feedin motors, solenoids, SCR controls, and
heaters, etc. The cables should be ran in metal conduit that is properly
rounded. This is especially useful in applications where cable runs are lon
and portable two-way radios are used in close proximity or if the installation
is near a commercial radio transmitter.
4. Si nal or Control cables within an enclosure should be routed as far as possible
from contactors, control relays, transformers, and other noisy components.
5. In extremely hi h EMI environments, the use of external EMI suppression
devices, such as ferrite suppression cores, is effective. Install them on Si nal
and Control cables as close to the unit as possible. Loop the cable throu h the
core several times or use multiple cores on each cable for additional protection.
Install line filters on the power input cable to the unit to suppress power line
interference. Install them near the power entry point of the enclosure. The
followin EMI suppression devices (or equivalent) are recommended:
Ferrite Suppression Cores for si nal and control cables:
Fair-Rite # 0443167251 (RLC# FCOR0000)
TDK # ZCAT3035-1330A
Steward # 28B2029-0A0
Line Filters for input power cables:
Schaffner # FN610-1/07 (RLC# LFIL0000)
Schaffner # FN670-1.8/07
Corcom # 1 VR3
Note: Reference manufacturer’s instructions when installing a line filter.
6. Lon cable runs are more susceptible to EMI pickup than short cable runs.
Therefore, keep cable runs as short as possible.
7. Switchin of inductive loads produces hi h EMI. Use of snubbers across
inductive loads suppresses EMI.
Snubber: RLC# SNUB0000.
4.0 WIRING THE METER

7
Before connectin the wires, the Timer Input lo ic jumper should be verified for proper position.
4.2 TIMER INPUT WIRING
CAUTION: Timer Input common is NOT isolated from ser Input common. In order to preserve the safety of the meter application, the timer input
common must be suitably isolated from hazardous live earth referenced voltage; or input common must be at protective earth ground potential. If not,
hazardous voltage may be present at the ser Inputs and ser Input Common terminals. Appropriate considerations must then be given to the potential
of the ser Input Common with respect to earth ground; and the common of the isolated plug-in cards with respect to input common.
Two Wire Proximity, Current Sour e Current Sour ing Output
Interfa ing With TTL
Current Sinking Output
Swit h or Isolated Transistor; Current Sink Swit h or Isolated Transistor; Current Sour e
Emitter Follower; Current Sour e
4.1 POWER WIRING
AC Power
Terminal 1: VAC
Terminal 2: VAC
DC Power
Terminal 1: +VDC
Terminal 2: -VDC
4.3 USER INPUT WIRING
Before connectin the wires, the Timer Input lo ic jumper should be verified for proper position. When the user input is confi ured for cycle
count, in module 4, the count input should be wired between terminals 7 & 10.
Sour ing Logi
Terminals 7-9:
+ VDC throu h external switchin device
Terminal 10:
-VDC throu h external switchin device
The user inputs of the meter are internally
pulled down to 0 V with 22 K:resistance.
The input is active when a volta e reater
than 3.6 VDC is applied.
Sinking Logi
Terminals 7-9
Terminal 10
The user inputs of the meter are internally
pulled up to +12 V with 22 K:resistance.
The input is active when it is pulled low
(<0 .9 V).
Connect external switchin device between the
appropriate User Input terminal and User Comm.
}

8
4.4 SETPOINT (ALARMS) WIRING
SETPOINT PLUG-IN CARD TERMINALS
SINKING OUTPUT LOGIC CARD
SOURCING OUTPUT LOGIC CARD
4.5 SERIAL COMMUNICATION WIRING
RS232 Communi ations
RS232 is intended to allow two devices to communicate over distances up to
50 feet. Data Terminal Equipment (DTE) transmits data on the Transmitted Data
(TXD) line and receives data on the Received Data (RXD) line. Data Computer
Equipment (DCE) receives data on the TXD line and transmits data on the RXD
line. The PAX emulates a DTE. If the other device connected to the meter also
emulates a DTE, the TXD and RXD lines must be interchan ed for
communications to take place. This is known as a null modem connection. Most
printers emulate a DCE device while most computers emulate a DTE device.
Some devices cannot accept more than two or three characters in succession
without a pause in between. In these cases, the meter employs a busy function.
As the meter be ins to transmit data, the RXD line (RS232) is monitored to
determine if the receivin device is “busy”. The receivin device asserts that it
is busy by settin the RXD line to a space condition (lo ic 0). The meter then
suspends transmission until the RXD line is released by the receivin device.
RS485 Communi ations
The RS485 communication standard allows the connection of up to 32
devices on a sin le pair of wires, distances up to 4,000 ft. and data rates as hi h
as 10M baud (the PAX is limited to 19.2k baud). The same pair of wires is used
to both transmit and receive data. RS485 is therefore always half-duplex, that is,
data cannot be received and transmitted simultaneously.
12 B
(-)
33K
33K
+5V
Transmit
Enable
PAX METERPAX METER RECEIVING DEVICERECEIVING DEVICE
A (+)(+)
COMM.
*
NC
* OPTIONAL
13
14
15
Terminal Blo k Conne tion Figure
Terminal Blo k Conne tion Figure
Extended Comms Conne tion Figure
Extended Comms Conne tion Figure

9
Time synchronization between multiple
PAXCK meters can be accomplished throu h a
hardware interface on the Real-Time Clock option
card. This RS485 type interface allows connection
of up to 32 PAXCK meters in a two-wire
multidrop network, at distances up to 4000 ft.
In a synchronization network, one PAXCK
meter is pro rammed as the Host, while all other
meters are pro rammed as Slaves. Once every
hour, the Host meter outputs a time
synchronization pulse onto the network. Upon
receivin the synchronization pulse, each Slave
meter automatically adjusts the minutes and
seconds of its RTC Time settin to synchronize
with the Host. Real-Time Clo k Syn hronization Figure
4.6 REAL-TIME CLOCK WIRING (PAXCK)
5.0 REVIEWING THE FRONT BUTTONS AND DISPLAY
* Cycle counter and Real-Time Clock displays are locked out in Factory Settings.
** Factory setting for the F1 and F2 keys is NO mode.
*** Factory setting for the RST key is  (Reset Display)
Selects digit location in parameter valuesReset (Function key) ***RST
Decrement selected parameter value or selectionsFunction key 2; hold for 3 seconds for Second Function 2 **F2WW
Increment selected parameter value or selectionsFunction key 1; hold for 3 seconds for Second Function 1 **F1VV
Store selected parameter and index to next parameterAccess Programming ModePAR
Exit programming and return to Display ModeIndex display through Timer, Cycle Counter, Date, and Time DSP
PROGRAMMING MODE OPERATIONDISPLAY MODE OPERATIONKEY

10
PROGRAMMING MODE ENTRY (PAR KEY)
The Pro rammin Mode is entered by pressin the PAR key. If this mode is
not accessible, then meter pro rammin is locked by either a security code or a
hardware lock. (See Modules 2 and 3 for pro rammin lock-out details.)
MODULE ENTRY (ARROW & PAR KEYS)
Upon enterin the Pro rammin Mode, the display alternates between 
and the present module (initially ). The arrow keys (F15and F26) are used
to select the desired module, which is then entered by pressin the PAR key.
PARAMETER (MODULE) MENU (PAR KEY)
Each module has a separate parameter menu. These menus are shown at the
start of each module description section which follows. The PAR key is pressed
to advance to a particular parameter to be chan ed, without chan in the
pro rammin of precedin parameters. After completin a module, the display
will return to . From this point, pro rammin may continue by selectin
and enterin additional modules. (See MODULE ENTRY above.)
PARAMETER SELECTION ENTRY (ARROW & PAR KEYS)
For each parameter, the display alternates between the parameter and the
present selection or value for that parameter. For parameters which have a list of
selections, the arrow keys (F15and F26) are used to sequence throu h the list
until the desired selection is displayed. Pressin the PAR key stores and activates
the displayed selection, and also advances the meter to the next parameter.
NUMERICAL VALUE ENTRY (ARROW, RST & PAR KEYS)
For parameters which require a numerical value entry, the arrow keys can be
used to increment or decrement the display to the desired value. When an arrow
key is pressed and held, the display automatically scrolls up or scrolls down.
The lon er the key is held, the faster the display scrolls.
In addition, the RST key can be used in combination with the arrow keys to
enter numerical values. The RST key is pressed to select a specific di it to be
chan ed, which blinks when selected. Once a di it is selected, the arrow keys
are used to increment or decrement that di it to the desired number. The RST
key is then pressed a ain to select the next di it to be chan ed. This “select and
set” sequence is repeated until each di it is displayin the proper number.
Pressin the PAR key stores and activates the displayed value, and also
advances the meter to the next parameter.
PROGRAMMING MODE EXIT (DSP KEY or PAR KEY at )
The Pro rammin Mode is exited by pressin the DSP key (from anywhere
in the Pro rammin Mode) or the PAR key (with   displayed). This will
commit any stored parameter chan es to memory and return the meter to the
Display Mode. If a parameter was just chan ed, the PAR key should be pressed
to store the chan e before pressin the DSP key. (If power loss occurs before
returnin to the Display Mode, verify recent parameter chan es.)
STEP BY STEP PROGRAMMING INSTRUCTIONS:
OVERVIEW
PROGRAMMING MENU
DISPLAY MODE
The meter normally operates in the Display Mode. In this mode, the meter
displays can be viewed consecutively by pressin the DSP key. The
annunciators to the left of the display indicate which display is currently shown;
Timer (TMR), Cycle Counter (CNT), or Date (DAT). The Time Display for the
Real-Time Clock is shown with no annunciator. Any of these displays can be
locked from view throu h pro rammin . (See Module 3.)
PROGRAMMING MODE
Two pro rammin modes are available.
Full Progra ing Mode permits all parameters to be viewed and modified.
Upon enterin this mode, the front panel keys chan e to Pro rammin Mode
operations. This mode should not be entered while a process is runnin , since
the meter timin functions and User Input response may not operate properly
while in Full Pro rammin Mode.
Quick Progra ing Mode permits only certain parameters to be viewed and/or
modified. When enterin this mode, the front panel keys chan e to
Pro rammin Mode operations, and all meter functions continue to operate
properly. Quick Pro rammin Mode is confi ured in Module 3. The Display
Intensity Level “” parameter is only available in the Quick Pro rammin
Mode when the security code is non-zero. For a description, see Module 9—
Factory Service Operations. Throu hout this document, Pro rammin Mode
(without Quick in front) always refers to “Full” Pro rammin Mode.
PROGRAMMING TIPS
The Pro rammin Menu is or anized into nine modules. (See above.) These
modules roup to ether parameters that are related in function. It is
recommended to be in pro rammin with Module 1 and proceed throu h each
module in sequence. Note that Modules 5 throu h 8 are only accessible when
the appropriate plu -in option card is installed. If lost or confused while
pro rammin , press the DSP key to exit pro rammin mode and start over.
When pro rammin is complete, it is recommended to record the meter settin s
on the Parameter Value Chart and lock-out parameter pro rammin with a User
Input or lock-out code. (See Modules 2 and 3 for lock-out details.)
FACTORY SETTINGS
Factory Settin s may be completely restored in Module 9. This is a ood
startin point if encounterin pro rammin problems. Throu hout the module
description sections which follow, the factory settin for each parameter is
shown below the parameter display. In addition, all factory settin s are listed on
the Parameter Value Chart followin the pro rammin section.
ALTERNATING SELECTION DISPLAY
In the module description sections which follow, the dual display with arrows
appears for each pro rammin parameter. This is used to illustrate the display
alternatin between the parameter (top display) and the parameter’s Factory
Settin (bottom display). In most cases, selections or value ran es for the
parameter will be listed on the ri ht.
.0 PROGRAMMING THE METER
Indi ates Program Mode Alternating Display
Fa tory Settings are shown.
Parameter
Sele tion/Value
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