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User’s Guide
®
omega.com
®
http://www.omega.com
e-mail: info@omega.com
CN3440 SERIES
Universal Temperature & Process
Controllers
Installation Guide
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WARRANTY/DISCLAIMER OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 37 months from date of purchase. OMEGA Warranty adds an additional one (1) month grace period to the normal three (3) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product. If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service Department w
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CONTENTS 1 INTRODUCTION .................................. 2 2 PREPARATION .................................... 3 2.1 Checking the Code Number ......... 3 3 MECHANICAL INSTALLATION .......... 4 3.1 Siting .......................................... 4 3.2 Mounting ...................................... 5 4 ELECTRICAL INSTALLATION ............ 6 4.1 Access to Terminals ..................... 6 4.2 Setting the Input Selector Links ... 6 4.3 Setting the Isolated Output Link ... 6 4.4 Cable Glands and
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1 INTRODUCTION The instrument documentation is shown in Fig. 1.1. The Standard Manuals, including the specification sheet, are supplied with all instruments. The Modbus Supplement is supplied with instruments configured for Modbus Serial Communication. This manual includes an Installation Record which should be completed as a log of the electrical installation. The record is useful when carrying out initial instrument programming and can be retained for future reference. INSTALLATION Product Id
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2 PREPARATION 2.1 Checking the Code Number – Fig. 2.1 XXXX / X X X X X X X X Code Number Label Fig. 2.1 Location of Code Number Label 3
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3 MECHANICAL INSTALLATION EC Directive 89/336/EEC 55°C In order to meet the requirements of the Max. EC Directive 89/336/EEC for EMC regulations, this product must not be used 0°C Min. in a non-industrial environment. A – Within Temperature Limits 3.1 Siting – Figs. 3.1 and 3.2 0 to 90% RH Minimum Sensor A – Close to Sensor B – Within Humidity Limits IP66/ NEMA4X C – Within Protection Rating Limits B – At Eye-level Location + C – Avoid Vibration Caution. Select a location away from strong electr
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3 MECHANICAL INSTALLATION… 3.2 Mounting – Figs. 3.3 and 3.4 The instrument is designed for wall-/pipe-mounting – see Fig. 3.4. Overall dimensions are shown in Fig. 3.3. Dimensions in inches (mm) 1.65 2.68 (68) (42) 6.3 (160) 8.43 9.13 9.84 (214) (232) (250) 2.72 (69) Allowance for 7.9 (200) Cable Bends 3 Fixing Centres 2 / (61) O.D. Vertical or 8 Fixing Holes Horizontal Post (x3) 0.25 (6.5) Dia Fig. 3.3 Overall Dimensions 2 Drill suitable Position ‘U’ bolts on pipe 1 holes 2 Position plates ov
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4 ELECTRICAL INSTALLATION 4.2Setting the Input Warning. Before making any Selector Links – Fig. 4.2A connections, ensure that the power Plug-in links on the microprocessor p.c.b. are supply, any high voltage-operated control positioned according to the type of Process circuits and high common mode voltages Variable Input, Remote Set Point Input and are switched off. Valve Position Feedback Inputs used. Note. Remove the instrument front panel – see • Always route signal leads and power Fig. 4.1,
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4 ELECTRICAL INSTALLATION… Identify Link PL7 1 2 Set links for output type required PL7 PL7 1 1 Logic Output or Analog Output B – Isolated Output Types PL1 PL2 PL3 Process Remote Position Variable Set Point Feedback Input Input Input mA R, mV, THC & RTD V 2-wire Transmitter Input A – Input Types Fig. 4.2 Setting the Selector Links 7 PL1 PL1 PL1 PL1 1 12 1 12 1 12 1 12 6 7 6 7 6 7 6 7 PL2 PL2 PL2 1 8 1 8 1 8 4 5 4 5 4 5 PL3 PL3 PL3 1 8 1 8 1 8 4 5 4 5 4 5
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…4 ELECTRICAL INSTALLATION 4.4Cable Glands4.4.2Conduit Adaptors and Conduit Fixings (N. American – 0.5in) – Fig. 4.4 4.4.1Cable Glands (IEC – 20mm) – Fig. 4.3 Warning. • Rigid conduit must NOT be fitted to the controller. • Controller adaptors must incorporate a face seal. • Torque settings for the hubs and outer nuts on the specified adaptors is 20ft. lbs minimum, 25ft. lbs. maximum. Information. • Suitable adaptors for controller 'O'-Ring (mandatory for FM installations): APPLETON ST-50 PLUS
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4 ELECTRICAL INSTALLATION… 4.4.3Cable Glands (N. American – 0.5in) – Fig. 4.5 Warning. • Controller glands must be fitted with a face seal. • Torque settings (hubs only) – 20ft. lbs Alternative minimum, 25ft. lbs. maximum. Face Seal • Outer nuts – hand tight plus a half turn only. Information. • Suitable Cable Glands: (mandatory for Face FM installations): Seal O.Z. GEDNEY Hub SR-50-375 or SR-504 APPLETON Fittings CG 3150 or CG-3150S (and STG- vary 50 sealing ring). Illustration slightly THOMAS
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…4 ELECTRICAL INSTALLATION 4.5 Connections Summary – Fig. 4.6 Information. Input impedances: Low voltage(mV) >10MΩ Voltage >10MΩ Current 10Ω . Process Variable Input Relay 1 Relay 3 Remote Set Point Input Relay 2 Power Supply 3 4 567 8 9 10 11 12 13 14 15 16 17 12 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 MODBUS (RTU) Control Output Logic Input (if option fitted) Position Feedback Input Retransmission Output Fig. 4.6 Terminal Block Identification 10
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4 ELECTRICAL INSTALLATION… Terminal Number AC Supply 1 L 24V, 115V or 230V a.c. – see Fig. 4.22 2 N 3 N/O Relay 1 Output Motorized Valve Control Relay (open) 4 C – see Fig. 4.17 – see Fig. 4.19A 5 N/C 6 N/O Relay 2 Output Motorized Valve Control Relay (close) 7 C – see Fig. 4.17 – see Fig. 4.19A 8 N/C 9 N/O Relay 3 Output 10 C Alarm Relays – see Fig. 4.17 11 N/C 12 3rd lead/2-wire TX Pro
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…4 ELECTRICAL INSTALLATION 4.6 Input Connections Make connections to each input, as shown in Figs 4.4 to 4.14, first removing any factory-fitted wire links not required. 4.6.1 Thermocouple (THC) Inputs – Fig. 4.7 Note. Automatic Cold Junction Compensation (ACJC) is active when an input is programmed for use with thermocouples. Use the correct compensating cable between the THC and the terminals – see Table 4.2. If an external fixed cold junction is used, the connections to the instrument must be
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+ + + + + 4 ELECTRICAL INSTALLATION… Remote Set Point %^ %& ^ Remote Set Point & Process Variable Process Variable @ £$ @£$ Sleeved Link Sleeved + – Link Fig. 4.12 Current Input Connections Fig. 4.7 Thermocouple Input Connections @£$ Remote Set Point %^& Process Variable @£$ – Tx Fig. 4.13 2-wire Transmitter Red Red White Power Supply Input Connections Fig. 4.8 3-lead Resistance Thermometer Input Connections Remote Set Point %^ & Process Variable @£$ Remote Set Point % ^& Process Variable @ £
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+ …4 ELECTRICAL INSTALLATION 4.7 Output Connections 3 5 7 4 6 8 Make connections as shown in Figs 4.15 and 4.16. 4.8 Relay Connections – Fig. 4.17 For relay functions refer to the following table. Motorized 100% 0% Valve Drive Valve R2 elay 1R3 elay Relay Positioner Power On/Off Control —— Supply 100% 0% Time Prop.(Heat) —— Time Prop.(Cool) — — Motorized ValveOe pen Clos — (L) L N (N) Alarm Link Relay 3 90 ! 27 28 29 Relay 2 67 8 Relay 1 34 5 A – Standard Feedback Slidewire Configurat
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4 ELECTRICAL INSTALLATION… 4.10 Logic Input Connections – Figs. 4.20 and 4.21 Each logic input can be programmed to perform one of a number of functions – see Section 3.10 of the Programming Guide. Auto/ Local/Remote Dual Set Point Alarm Manual Set Point Selection Acknowledgement Selection Selection * Alarm Fixed Dual Acknowledge Automatic Local Set Point 2 5V Logic switching 0V Manual Remote Fixed Dual * Leading 'edge-triggered' (minimum duration 200ms) or Dual Set Point 1 30 31 32 Automatic Lo
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…4 ELECTRICAL INSTALLATION 4.11 Power Supply Selection and AC Connections – Fig. 4.22 115V 115 1 Digit 7 Code Label C31 x x xx x x x x x 2 230 3 Selector not Fitted (24V AC) 230V A – Selecting the Supply Voltage 115 Information. Fuse Rating - 5A Type T Neutral Line Fuse Remove plug to make connection Ground B – Power Supply Connections Fig. 4.22 Power Supply Selection and AC Connections 16
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4 ELECTRICAL INSTALLATION… Connection/Terminal Number Power Supply (Tick Box) L 1 Power Supply 230V AC 24V AC N 2 115V AC NO 3 Output Type: Relay 1 Output C 4 Output Function: 5 NC 6 NO Output Type: 7 C Relay 2 Output Output Function: 8 NC 9 NO Output Type: Relay 3 Output 10 C Output Function: 11 NC Link Positions (Tick Box) 12 3rd Process Variable 13 + Input 14 – mA mV/THC/RTD V 2-wire Tx Link Positions (Tick Box) 15 3rd Remote Set Point 16 + Input 17 – mA mV/THC/RTD V 18 Tx+ Termination Resist
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…4 ELECTRICAL INSTALLATION Connection/Terminal Number Link Positions (Tick Box) 25 + Control Output 26 – Analog Output Logic Output Link Positions (Tick Box) 27 3rd Position Feedback + 28 Input – 29 mA mV V R Logic Input 1 30 Logic Input 2 31 Common 32 18
