Omega Products CN63500 Installation Manual

CN63500

Temperature Limit Alarm

M4497-0000

z FM APPROVED, UL RECOGNIZED

z 2-LINE BY 4-DIGIT DISPLAY

z EXCEED, OUTPUT, AND ALARM ANNUNCIATORS

z FOUR BUTTON SILICONE RUBBER KEYPAD

z THERMOCOUPLE OR RTD SENSOR INPUT

z REMOTE RESET INPUT

z MAIN LIMIT OUTPUT: 5A RELAY. SELECTABLE FOR HIGH OR

LOW TRIP ACTIVATION

z OPTIONAL ALARMS: 5A RELAY(S)

z OPTIONAL NEMA 4X/IP65 SEALED FRONT BEZEL

z PARAMETER SECURITY VIA PROGRAMMABLE LOCKOUTS

APPROVED

UL Recognized Component, File # E123489

GENERAL DESCRIPTION

The CN63500 is a Factory Mutual approved temperature limit alarm, intended to provide an independent shutdown for thermal processes. The CN63500 accepts signals from a variety of temperature sensors (thermocouple or RTD elements), and its comprehensive programming allows it to meet a wide variety of application requirements.

Dual 4-digit displays allow viewing of the process temperature and limit setpoint simultaneously. Front panel indicators inform the operator of the process and output status. The main limit output and alarm outputs are field replaceable.

The limit output is selectable for high or low trip activation. If the process temperature goes above the limit setpoint for a high trip, or below the limit setpoint for a low trip, the limit relay will de-energize to initiate a process shutdown. The limit output cannot be reset until the process temperature returns to the proper operating range; manual reset is required (local or remote). Sensor failure will initiate a process shutdown.

Relay alarm(s) can be configured to activate according to a variety of actions (Absolute HI or LO, Deviation HI or LO, and Band IN or OUT) with adjustable hysteresis. A standby feature suppresses the alarm during power-up until the process stabilizes outside the alarm region.

The unit is constructed of a lightweight, high impact plastic case with a tinted front panel. The front panel meets NEMA 4X/IP65 specifications when properly

installed. Multiple units can be stacked horizontally or vertically. Modern surface-mount technology, extensive testing, plus high immunity to noise interference makes the CN63500 extremely reliable in industrial environments.

SAFETY SUMMARY

All safety related regulations, local codes and instructions that appear in the manual or on equipment must be observed to ensure personal safety and to prevent damage 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 the CN63500 to directly command motors, valves, or other actuators not equipped with safeguards. To do so can be potentially harmful to persons or equipment in the event of a fault to the unit.

CAUTION: Risk of Danger.

Read complete instructions prior to

installation and operation of the unit.

CAUTION: Risk of electric shock.

DIMENSIONS In inches (mm)

PANEL CUT-OUT

LP0682X

INSTRUCTION

SHEET

Shop online at: omega.com e-mail: info@omega.com For latest product manuals: omegamanual.info

GENERAL SPECIFICATIONS

1. DISPLAY: 2 line by 4-digit LED

Upper (Main) Display: 0.4" (10.2 mm) high red LED Lower (Secondary) Display: 0.3" (7.6 mm) high green LED Display Messages:

“OLOL” - Appears when measurement exceeds + sensor range. “ULUL” - Appears when measurement exceeds - sensor range. “OPEN” - Appears when open sensor is detected. “SHrt” - Appears when shorted sensor is detected (RTD only) “...” - Appears when display values exceed + display range. “-..” - Appears when display values exceed - display range.

LED Status Annunciators:

EX - Temperature exceeds limit setpoint OUT - Limit output is de-energized A1 - Alarm #1 is active A2 - Alarm #2 is active

2. POWER:

Line Voltage Models: 85 to 250 VAC, 50/60 Hz, 8 VA. Low Voltage Models:

DC Power: 18 to 36 VDC, 7 W. AC Power: 24 VAC +/-10%, 50/60 Hz, 9 VA

3. CONTROLS: Four rubber push buttons: R, P, Up, Down

4. MEMORY: Nonvolatile E2PROM retains all programmable parameters and values.

5. ENVIRONMENTAL CONDITIONS:

Operating Range: FM rated @ 0 to 65°C, UL rated @ 0 to 55°C Storage Range: -40 to 80°C Operating and Storage Humidity: 85% max. relative humidity (non-

condensing) from 0°C to 65°C.

Altitude: Up to 2000 meters

6. ISOLATION BREAKDOWN RATINGS: AC line with respect to all inputs and outputs: 2300 V for 1 minute (250

V working)

Relay contacts to all other inputs and outputs: 2300 VAC DC Power with respect to sensor input: 50 V working (500 V for 1 minute)

7. CERTIFICATIONS AND COMPLIANCES: SAFETY

Factory Mutual Approved, Report #3030454, FM 3545, FM 3810 UL Recognized Component, File #E123489, UL 873, CSA C22.2 No. 24 Recognized to U.S. and Canadian requirements under the Component

Recognition Program of Underwriters Laboratories, Inc. Type 4X Enclosure rating (Face only), UL 50 IEC 61010-1, EN 61010-1: Safety requirements for electrical equipment for

measurement, control, and laboratory use, Part 1. IP65 Enclosure rating (Face only), IEC 529

ELECTROMAGNETIC COMPATIBILITY

Notes:

1. Criterion A: Normal operation within specified limits.

8. CONNECTION: Wire clamping screw terminals Wire Gage Capacity: Two 14 AWG (2.55 mm), four 18 AWG (1.02 mm), or

four 20 AWG (0.61 mm).

Terminal Torque: 1.0Nm (8.9 in-lbs.).

1.4Nm (12.4 in-lbs.) max.

9. CONSTRUCTION: Black plastic alloy case and collar style panel latch. Panel latch can be installed for vertical or horizontal instrument stacking. One piece tinted plastic bezel. Bezel assembly with circuit boards can be removed from the case to change the output board without removing the case from the panel or disconnecting wiring. Unit meets NEMA 4X/IP65 requirements for indoor use, when properly installed. Flame resistant. Installation Category II, Pollution Degree 2.

10. WEIGHT: 0.38 lbs (0.17 kgs)

INPUT SPECIFICATIONS

1. SENSOR INPUT: Sample Period: 100 msec Step Response Time: Less than 300 msec typ., 400 msec max. (to within

99% of final value)

Normal Mode Rejection: Greater than 40 dB @ 50/60 Hz Common Mode Rejection: Greater than 120 dB, DC to 60 Hz Overvoltage Protection: Input overload 120 VAC for 15 seconds max.

2. Failed Sensor Response: Main Output: Sensor failure will initiate a process shutdown Display: “OPEN” Alarms: Upscale

3. INDICATION ACCURACY: ±(0.3% of Span +1°C) at 23°C ambient after 20 minute warm-up. (Includes NIST conformity, cold junction effect, A/D conversion errors and linearization conformity. Span Drift (maximum): 130 PPM/°C

4. RTD INPUT: 2 or 3 wire, 100 Ω platinum, alpha = 0.00385 (DIN 43760), alpha = 0.0039162

Excitation: 150 µA typical Resolution: 1 or 0.1 degree Lead Resistance: 15 Ω max. per input lead

5. THERMOCOUPLE INPUT: Types: T, E, J, K, R, S, B, N, Linear mV, software selectable Input Impedance: 20 MΩ all types Lead resistance effect: 0.25 µV/Ω Cold junction compensation: Less than ±1°C typ., (±1.5°C max), error over

0 to 65°C max. ambient temperature range. Defeated for Linear mV indication mode.

Resolution: 1° for all types, or 0.1° for T, E, J, K, and N onlY.

6. REMOTE RESET INPUT: Internally pulled up to +5 VDC (1MΩ). VIL: 0.85 V max., VIH: 3.65 V min., VINMAX: 5.25 VDC, I

OFF

: 1µA max.

no standardno standard-5.00 to +56.00

orange (+)

blue (-)

orange (+)

red (-)

-200 to +1300°C

-328 to +2372°F

no standard

grey (+)

red (-)

+149 to +1820°C +300 to +3308°F

white (+)

blue (-)

black (+)

red (-)

0 to 1768°C

+32 to 3214°F

white (+)

blue (-)

black (+)

red (-)

0 to 1768°C

+32 to +3214°F

brown (+)

blue (-)

yellow (+)

red (-)

-200 to +1250°C

-328 to +2282°F

yellow (+)

blue (-)

white (+)

red (-)

-200 to +760°C

-328 to 1400°F

brown (+)

blue (-)

violet (+)

red (-)

-200 to +750°C

-328 to +1382°F

white (+)

blue (-)

blue (+)

red (-)

-200 to +400°C

-328 to +752°F

BS 1843ANSI

WIRE COLOR

RANGETC TYPE

RTD TYPE RANGE

385

-200 to +600°C

-328 to +1100°F

392

-200 to +600°C

-328 to +1100°F

OHMS 2.0 to 320.0

Class AEN 55011Emissions

0.5 cycle

3 V/rms Criterion A

Criterion A

EN 61000-4-11

EN 61000-4-6

Voltage dip/interruptions

RF conducted interference

1 kV signal

2 kV power

Criterion A

EN 61000-4-5

EN 61000-4-4

Surge

Fast transients (burst)

10 V/m

Criterion AEN 61000-4-3Electromagnetic RF fields

Criterion AEN 61000-4-2Electrostatic discharge

8 kV air discharge

Immunity:

Emissions:

4 kV contact discharge

Emissions and Immunity to EN 61326

1 kV L-L, 2 kV

L&N-E power

OUTPUT SPECIFICATIONS

1. LIMIT AND ALARM OUTPUT RELAYS: Contact Rating: 5 A @ 250 VAC or 30 VDC (resistive load) 1/10 HP @ 120

VAC (inductive load)

Life Expectancy: 100,000 cycles at max. load rating. (Decreasing load

increases life expectancy.)

2. LIMIT OUTPUT: CN63500-R1-AL1: Form-C relay; CN63500R1-AL2: Form-A relay. Selectable for high or low trip activation. If the process temperature goes above the limit setpoint for a high trip, or below the limit setpoint for a low trip, the limit relay will de-energize to initiate a process shutdown. The limit output cannot be reset until the process temperature returns to the proper operating range; manual reset is required (local or remote).

Annunciators:

“EX” - Lit when the process temperature exceeds the limit setpoint. “OUT” - Lit when the limit output is de-energized.

3. ALARM OUTPUTS (Optional): One or two Form-A relays. Modes:

Absolute High Acting Absolute Low Acting Deviation High Acting Deviation Low Acting Inside Band Acting Outside Band Acting

Reset Action: Programmable; automatic or latched. Latched alarms can be

reset regardless of limit exceed condition.

Standby Mode: Programmable; enable or disable. Hysteresis: Programmable. Annunciator: “A1” and “A2” programmable for normal or reverse acting.

Although this unit is designed with a high degree of immunity to Electro Magnetic Interference (EMI), proper installation and wiring methods must be followed to ensure compatibility in each application. The type of the electrical noise, source or coupling method into the unit may be different for various installations. Listed below are some EMC guidelines for successful installation in an industrial environment.

1. The unit should be mounted in a metal enclosure, which is properly connected

to protective earth.

2. Use shielded (screened) cables for all Signal and Control inputs. The shield

(screen) pigtail 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 connecting the shield, in order

of their effectiveness.

a. Connect the shield only at the panel where the unit is mounted to earth

ground (protective earth).

b. Connect the shield to earth ground at both ends of the cable, usually when

the noise source frequency is above 1 MHz.

c. Connect the shield to common of the unit and leave the other end of the

shield unconnected and insulated from earth ground.

3. Never run Signal or Control cables in the same conduit or raceway with AC

power lines, conductors feeding motors, solenoids, SCR controls, and

heaters, etc. The cables should be run in metal conduit that is properly

grounded. This is especially useful in applications where cable runs are long

and portable two-way radios are used in close proximity or if the installation

is near a commercial radio transmitter.

4. Signal or Control cables within an enclosure should be routed as far away as possible from contactors, control relays, transformers, and other noisy components.

5. In very electrically noisy environments, the use of external EMI suppression devices, such as ferrite suppression cores, is effective. Install them on Signal and Control cables as close to the unit as possible. Loop the cable through 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 following EMI suppression devices (or equivalent) are recommended: Ferrite Suppression Cores for signal and control cables:

Fair-Rite # 0443167251 TDK # ZCAT3035-1330A Steward #28B2029-0A0

Line Filters for input power cables:

Schaffner # FN610-1/07 Schaffner # FN670-1.8/07 Corcom #1VR3

Note: Reference manufacturer’s instructions when installing a line filter.

6. Long cable runs are more susceptible to EMI pickup than short cable runs. Therefore, keep cable runs as short as possible.

7. Switching of inductive loads produces high EMI. Use of snubbers across inductive loads suppresses EMI.

EMC INSTALLATION GUIDELINES

18 to 36 VDC / 24 VAC

85 to 250 VAC

PART NUMBERS

LIMIT OUTPUT ALARM 1 OUTPUT ALARM 2 OUTPUT PART NUMBERS

Form-C Relay Form-A Relay CN63500-R1-AL1-LV

Form-A Relay Form-A Relay Form-A Relay CN63500-R1-AL2-LV

REPLACEMENT

OUTPUT BOARD

CN6-RBDLA210

CN6-RBD48111

CN6-RBDLA210

REPLACEMENT

OUTPUT BOARD

CN63500-R1-AL2Form-A RelayForm-A RelayForm-A Relay

CN63500-R1-AL1Form-A RelayForm-C Relay

PART NUMBERSALARM 2 OUTPUTALARM 1 OUTPUTLIMIT OUTPUT

The CN63500 meets NEMA 4X/IP65 requirements for indoor use to provide a watertight seal in steel panels with a minimum thickness of 0.09 inch, or aluminum panels with a minimum thickness of 0.12 inch. The units are intended to be mounted into an enclosed panel. It is designed so that the units can be stacked horizontally or vertically. The bezel assembly MUST be in place during installation of the unit.

Instructions:

1. Prepare the panel cutout to the dimensions.

2. Remove the panel latch from the unit. Discard the cardboard sleeve.

3. Carefully remove the center section of the panel gasket and discard. Slide the panel gasket over the unit from the rear, seating it against the lip at the front of the case.

4. Insert the unit into the panel cutout. While holding the unit in place, push the panel latch over the rear of the unit, engaging the tabs of the panel latch in the farthest forward slot possible.

5. To achieve a proper seal, tighten the panel latch screws evenly until the unit is snug in the panel, torquing the screws to approximately 7 in-lbs (79 N-cm). Over tightening can result in distortion of the panel, and reduce the effectiveness of the seal.

Note: The installation location of the CN63500

is important. Be sure to keep it away from heat sources (ovens, furnaces, etc.), and away from direct contact with caustic vapors, oils, steam, or any other process byproducts in which exposure may affect proper operation.

Multiple Unit Stacking

The CN63500 is designed for close spacing of multiple units. Units can be stacked either horizontally or vertically. For vertical stacking, install the panel latch with the screws to the sides of the unit. For horizontal stacking, the panel latch screws should be at the top and bottom of the unit. The minimum spacing from center line to center line of units is 1.96" (49.8 mm). This spacing is the same for vertical or horizontal stacking.

Note: When stacking units, provide adequate panel ventilation to ensure that

the maximum operating temperature range is not exceeded.

Caution: Disconnect power to the unit and to the output control circuits

to eliminate the potential shock hazard when removing the bezel assembly.

Unit Removal Procedure

To remove a unit from the panel, first loosen the panel latch screws. Insert flat blade screwdrivers between the latch and the case on either side of the unit, so that the latches disengage from the grooves in the case. Push the unit through the panel from the rear.

Removing Bezel Assembly

The bezel assembly must be removed from the case to replace the output board. To remove the bezel assembly, insert a flat blade screwdriver into the pry slot on either side of the unit. Twist the screwdriver handle until the unit is ejected enough to allow removal.

Caution: The bezel assembly contains electronic circuits that can be damaged

by static electricity. Before removing the assembly, discharge static charge on your body by touching an earth ground point. It is also important that the bezel assembly be handled only by the bezel itself. Additionally, if it is necessary to handle a circuit board, be certain that hands are free from dirt, oil, etc., to avoid circuit contamination that may lead to malfunction. If it becomes necessary to ship the unit for repairs, place the unit in its case before shipping.

Installing Bezel Assembly

To install the bezel assembly, insert the assembly into the case until the bezel is fully seated against the lip of the case. Properly installing the bezel assembly is necessary for watertight sealing.

1.0 INSTALLING THE CN63500

2.0 WIRING THE CN63500

After the unit has been mechanically mounted, it is ready to be wired. All wiring connections are made to the rear screw terminals. When wiring the unit, use the numbers on the label and those embossed on the back of the case, to identify the position number with the proper function.

All conductors should meet voltage and current ratings for each terminal. Also cabling should conform to appropriate standards of good installation, local codes and regulations. It is recommended that power supplied to the unit (AC or DC) be protected by a fuse or circuit breaker. Strip the wire, leaving approximately 1/4" (6 mm) bare wire exposed (stranded wires should be tinned with solder). Insert the wire under the clamping washer and tighten the screw until the wire is clamped tightly.

Caution: Unused terminals are NOT to be used as tie points. Damage to the

CN63500 may result if these terminals are used.

POWER WIRING

AC Power

Primary AC power is connected to terminals #11 and #12, labeled AC. To reduce the chance of noise spikes entering the AC line and affecting the CN63500, an AC feed separate from that of the load should be used to power the CN63500. Be certain that the AC power to the CN63500 is relatively “clean” and within the variation limit. Connecting power from heavily loaded circuits or circuits that also power loads that cycle on and off (contacts, relays, motors, etc.), should be avoided.

DC Power

DC Power (18 to 36 VDC) is connected to terminals #11 and #12 labeled DC+ and DC- respectively.

CAUTION: Observe proper polarity when connecting DC voltages. Damage to the unit may occur if polarity is reversed.

SIGNAL WIRING

Thermocouple

When connecting the thermocouple, be certain that the connections are clean and tight. If the thermocouple probe cannot be connected directly to the CN63500, thermocouple wire or thermocouple extension-grade wire must be used to extend the connection points (copper wire does not work). Always refer to the thermocouple manufacturer’s recommendations for mounting, temperature range, shielding, etc. For multi-probe temperature averaging applications, two or more thermocouple probes may be connected to the CN63500 (always use the same type). Paralleling a single thermocouple to more than one CN63500 is not recommended. Generally, the red wire from the thermocouple is negative and connected to the CN63500’s common.

RTD

When connecting the RTD, be certain that the connections are clean and tight. RTD sensors have a higher degree of accuracy and stability than thermocouple sensors. Most RTD sensors available are the three wire type. The third wire is a sense lead for canceling the effects of lead resistance of the probe. Four wire RTD elements may be used by leaving one of the sense leads disconnected. Two wire RTD sensors may be used in either of two ways: A) Attach the RTD to terminals #8 and #10. Install a copper sense wire of the

same wire gauge as the RTD leads. Attach one end of the wire at the probe

and the other end to terminal #9. Complete lead wire compensation is

obtained. This is the preferred method. B) Attach the RTD to terminals #8 and #10. Install a shorting wire between

terminals #9 and #10. A temperature offset error of 2.5°C/ohm of lead

resistance exists. The error may be compensated by programming a

temperature offset.

Note: With extended cable runs, be sure the lead resistance is less than 15

ohms/lead.

RELAY CONNECTIONS

To prolong contact life and suppress electrical noise interference due to the switching of inductive loads, it is good installation practice to install a snubber across the contactor. Follow the manufacturer's instructions for installation.

Note: Snubber leakage current can cause some electromechanical devices to be

held ON.

*Terminal numbers are model dependent. See Terminal Configurations for

description.

REMOTE RESET WIRING

The use of shielded cable is recommended. Follow the EMC installation guidelines for shield connection.

Terminal #6 is the Remote Reset. Any form of mechanical switch may be connected to terminal #6 (REMOTE RESET) and terminal #8 (COMM.). Sinking open collector logic with less than 0.7 V saturation and off-state leakage current of less than 1 µA may also be used.

Thermocouple Connection

RTD Connection

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