User’s Guide omega.com ® ® http://www.omega.com e-mail: info@omega.
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.
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.
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.
2 2.1 PREPARATION Checking the Code Number – Fig. 2.1 XXXX / X X X X X X X X Code Number Label Fig. 2.
3 MECHANICAL INSTALLATION EC Directive 89/336/EEC In order to meet the requirements of the EC Directive 89/336/EEC for EMC regulations, this product must not be used in a non-industrial environment. 3.1 Siting – Figs. 3.1 and 3.2 Minimum 55°C Max. 0°C Min. A – Within Temperature Limits 0 to 90% RH Sensor A – Close to Sensor B – Within Humidity Limits IP66/ NEMA4X B – At Eye-level Location C – Within Protection Rating Limits + C – Avoid Vibration Fig. 3.1 General Requirements Caution.
3 3.2 MECHANICAL INSTALLATION… 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 (42) Fixing Centres 2.68 (68) 6.3 (160) 8.43 (214) 9.84 (250) 2.72 (69) 7.9 (200) Fixing Centres Allowance for Cable Bends 9.13 (232) 23/8 (61) O.D. Vertical or Horizontal Post Fixing Holes (x3) 0.25 (6.5) Dia Fig. 3.
4 ELECTRICAL INSTALLATION Warning. Before making any connections, ensure that the power supply, any high voltage-operated control circuits and high common mode voltages are switched off. • • Note. Always route signal leads and power cables separately, preferably in earthed metal conduit. It is strongly recommended that screened cable is used for signal inputs and relay connections. Connect the screen to the ground stud. Information. Use cable appropriate for the load currents.
4 ELECTRICAL INSTALLATION… 1 Identify Link PL7 2 Set links for output type required PL7 1 Logic Output PL7 1 or Analog Output B – Isolated Output Types 8 5 4 5 4 4 8 PL2 PL3 1 5 4 4 1 PL3 5 8 PL3 5 4 5 8 PL2 1 8 1 6 7 6 7 12 1 PL3 Position Feedback Input 1 8 PL2 1 7 6 7 12 1 PL1 12 PL1 2-wire Transmitter Input 1 V PL2 Remote Set Point Input 6 PL1 R, mV, THC & RTD 1 mA PL1 12 PL1 Process Variable Input A – Input Types Fig. 4.
…4 ELECTRICAL INSTALLATION 4.4 Cable and Conduit Fixings Glands 4.4.1 Cable (IEC – 20mm) – Fig. 4.3 Glands 4.4.2 Conduit Adaptors (N. American – 0.5in) – Fig. 4.4 • • • • 'O'-Ring 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.
4 ELECTRICAL INSTALLATION… 4.4.3 Cable Glands (N. American – 0.5in) – Fig. 4.5 • • • • • Warning. Controller glands must be fitted with a face seal. Torque settings (hubs only) – 20ft. lbs minimum, 25ft. lbs. maximum. Outer nuts – hand tight plus a half turn only. Information. Suitable Cable Glands: (mandatory for FM installations): O.Z. GEDNEY SR-50-375 or SR-504 APPLETON CG 3150 or CG-3150S (and STG50 sealing ring). THOMAS & BETTS 2521.
…4 ELECTRICAL INSTALLATION 4.5 Connections Summary – Fig. 4.6 Information. Input impedances: Low voltage(mV) >10MΩ Voltage >10MΩ Current 10Ω. Relay 1 Relay 3 Process Variable Input Remote Set Point Input Relay 2 Power Supply 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 1 2 18 19 20 21 22 23 24 25 26 MODBUS (RTU) (if option fitted) 27 28 29 30 31 32 Control Output Logic Input Position Feedback Input Retransmission Output Fig. 4.
4 ELECTRICAL INSTALLATION… Terminal Number 1 2 AC Supply L 24V, 115V or 230V a.c. N 3 4 5 N/O C N/C Relay 1 Output – see Fig. 4.17 Motorized Valve Control Relay (open) – see Fig. 4.19A 6 7 8 N/O C N/C Relay 2 Output – see Fig. 4.17 Motorized Valve Control Relay (close) – see Fig. 4.19A 9 10 11 N/O C N/C Relay 3 Output – see Fig. 4.17 Alarm Relays 12 13 14 3rd lead/2-wire TX Input 1+ Input 1– Process Variable Input – see Figs. 4.7 to 4.9, 4.12 and 4.
…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.
4 % ^ & @ £ $ Sleeved Link + – Fig. 4.7 Thermocouple Input Connections – Fig. 4.12 Current Input Connections @ £$ % ^& @ £$ Red White @ £$ Sleeved Link + Remote Set Point Process Variable % ^& Remote Set Point Process Variable + Remote Set Point Process Variable ELECTRICAL INSTALLATION… Red Tx – Fig. 4.13 2-wire Transmitter Power Supply Input Connections Fig. 4.
…4 ELECTRICAL INSTALLATION 4.7 Output Connections 3 4 5 67 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. Relay 1 Relay 2 Relay 3 On/Off Control ✓ — — Time Prop.(Heat) ✓ — — Time Prop.
4 4.10 ELECTRICAL INSTALLATION… 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.
…4 4.11 ELECTRICAL INSTALLATION Power Supply Selection and AC Connections – Fig. 4.22 115V 115 1 Digit 7 Code Label C31 x x x x x x x x x 2 3 Selector not Fitted (24V AC) 230 230V A – Selecting the Supply Voltage 115 Information. Fuse Rating - 5A Type T Neutral Line Remove plug to make connection Fuse Ground B – Power Supply Connections Fig. 4.
4 ELECTRICAL INSTALLATION… Connection/Terminal Number 1 L 2 N 3 NO 4 C 5 NC 6 NO 7 C 8 NC 9 NO Power Supply Power Supply (Tick Box) 230V AC 24V AC 115V AC Output Type: Relay 1 Output Output Function: Output Type: Relay 2 Output Output Function: Output Type: Relay 3 Output 10 C Output Function: 11 NC Link Positions (Tick Box) 12 3rd Process Variable Input 13 + 14 – mA mV/THC/RTD V 2-wire Tx Link Positions (Tick Box) 15 3rd Remote Set Point Input 16 + 17 – mA mV/THC/
…4 ELECTRICAL INSTALLATION Connection/Terminal Number Link Positions (Tick Box) 25 + Control Output 26 – Analog Output Logic Output 27 3rd Position Feedback Input 28 + 29 – Logic Input 1 30 Logic Input 2 31 Common 32 18 Link Positions (Tick Box) mA mV R V
NOTES 19
…NOTES 20
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