E-680 Series Universal Data Loggers / Scanners

1. Introduction

The E-680 series universal data loggers/scanners are advanced, new-generation microcontroller-based industrial instruments designed for panel mounting, compatible with IEC/TR 60668 standards. They feature universal inputs and outputs that can be easily programmed by the user. The E-680 series indicates measurements from up to 32 different points on its display and determines alarm conditions by comparing measurements against two set points for each channel. Alarm conditions can be directed to common alarm relays and/or independent relays. The instruments can be connected to an RS-485 communication line for central data collection and storage on a PC.

Package Contents:

• E-680 Device
• 2 pieces of mounting clamps
• User manual
• Guarantee certificate

Safety Precautions:

• The E-680 is designed for industrial environments.
• Keep the unit away from flammable gases that could cause an explosion.
• Do not use alcohol or other solvents for cleaning. Use a clean cloth soaked in water, tightly squeezed, to wipe the outer surface.
• It is not intended for medical applications.
• Installation and configuration should only be performed by qualified personnel.
• Ensure the device is properly grounded.
• The controller does not include a power switch; power supply must be controlled via a fuse or circuit breaker.
• Route low-voltage wiring, especially sensor inputs, away from high-current power cables to minimize electrical noise. Use screened cables and grounding if necessary.

EU Directive Compliance:

• Low Voltage Directive: EN 61010-1
• EMC Directive: EN 61326-1

Key Features:

• High reading sensitivity with 16-bit resolution.
• Infinite life time and high isolation voltage semiconductor multiplexer relay.
• Standard RS-485 Modbus communication interface.
• Up to 2 common alarm relays and 16 independent alarm relay outputs.
• Up to 2 configurable analog outputs for retransmission.
• Each channel can be programmed independently with 2 set points per input.
• Programmable alarm types and hysteresis for each set point.
• Alarm states can be directed to common or independent relays.
• Programmable display and scan intervals.
• Flow rate calculation with compensation for up to 10 channels.
• Arithmetic operations (add, subtract, multiply, divide) on physical channels.
• Supports connecting up to 31 instruments to a PC on the same communication line.
• Distributed system structure.

1.1. Technical Specifications

* Relay life varies with usage configuration. Contacts may melt or burn out when relays age.

1.2. Type Coding

The model number follows a specific coding structure: E-680 - UU - V - W - XX - Y - Z

• UU: Number of Inputs (01-32)
• V: Common Relay Output (0: None, 1: 1 Relay, 2: 2 Relays)
• W: Number of Independent Relays (00-16)
• XX: Communication (0: None, 1: RS-485 Modbus) - Must be '0' for devices with >16 channels.
• Y: Analog Output (0: None, 1: 1 Analog Output, 2: 2 Analog Outputs)
• Z: Power Supply (0: 85-265 VAC / 85-375 VDC, 1: 20-60 VAC / 20-85 VDC)

Coding Example: E-680-16-2-0-08-1-0 indicates 16 inputs, 2 common relays, 8 independent relays, RS-485 communication, 1 analog output, and 85-265 VAC / 85-375 VDC supply.

1.3. Dimensions

The device has dimensions of 96 mm (width) x 192 mm (height) x 11 mm (depth behind panel). The panel cutout required is 184 x 89 mm with a minimum spacing of 25 mm and 100 mm.

Diagram Description: The diagram shows the front panel dimensions (96mm width, 192mm height) and the panel cutout dimensions (184mm x 89mm) with required clearances.

1.4. Panel Mounting

The E-680 controller should be installed in a suitable grounded metal enclosure (panel) to prevent access to live parts. It lacks a power switch, so power supply and outputs must be wired through a fuse or circuit breaker. To minimize electrical noise, route low-voltage and sensor input wiring away from high-current power cables, using screened cables and grounding if necessary. Power cables must conform to IEC 60245 and IEC 60227 standards.

Mounting Steps:

1. Cut a hole in the panel according to the specified dimensions.
2. Slide the controller into the cutout from the front.
3. Use the clamp holes on the top and bottom sides of the device. Fit the mounting clamps, ensuring lugs are in their slots.
4. Fasten the mounting clamps using the retaining screws.

2. Usage

2.1. General Operation

The front panel features a 9-digit, 7-segment LED display, status LEDs, and control buttons.

Front Panel Elements:

• Display: Shows channel numbers, measured values, and alarm information.
• LEDs:
  • Program: Lights when in configuration mode.
  • Manual: Lights in manual mode.
  • Set 1: Lights during Set 1 common alarm.
  • Set 2: Lights during Set 2 common alarm.
• Buttons:
  • [Up Arrow] / [Down Arrow]: Change channel number (manual mode), page, or parameter values (configuration mode).
  • [Enter Button]: Access alarm pages (normal mode), or move between parameters (configuration mode).
  • [Escape Button]: Exit menus or reach configuration level when pressed with [Enter Button].
  • [Mode Toggle Button]: Toggle between automatic and manual mode.

Display Modes:

• Normal Operation State: Displays channel number (first two digits), measured value (digits 4-7), and alarm information (last digit). Channel data can be viewed automatically (consecutive scan) or manually (selected channel). The display time for automatic mode is set by the GA parameter. The [Mode Toggle Button] switches between automatic and manual modes.
• Totalizer: Accessible in manual mode via the [Enter Button]. Pressing [Up Arrow] and [Down Arrow] simultaneously resets the totalizer.
• Alarm Pages:
  • Alarm Page 1-16: Displays alarms for channels 1-16. The last digit shows 'A'.
  • Alarm Page 17-32: Displays alarms for channels 17-32. The last digit shows 'B'.
  • Relay Page 1-16: Displays the status of output relays R1 to R16. The last digit shows 'O'.
  Pressing the [Escape Button] from alarm or totalizer pages returns to the normal operation page.

Diagram Description: Figure 2.1 shows the operator page display format. Figure 2.2 illustrates the display formats for alarm pages (showing channel number, measured value, alarm status like SET1/SET2) and the relay page (showing relay status).

2.2. Configuration Pages

To enter configuration mode from normal operation, press the [Enter Button] and [Escape Button] simultaneously. The device will display "COD" for the security code. The factory default is "10". Entering the correct code allows access to all settings, including calibration. An incorrect code restricts access to the "PRTC" page only. The display then shows "PAGE =" followed by the page name (e.g., GCNF, ACNF, ICNF, PRTC, CALB). Use [Up Arrow] and [Down Arrow] to navigate between pages. Press [Enter Button] to enter a page and view its parameters one by one. Parameter names appear in the first four digits, and values in the last four. Use [Up Arrow] / [Down Arrow] to change parameter values. Press [Escape Button] to exit a page.

2.2.1. General Configuration Page (GCNF)

• GA: Display Interval (1-99 sec) - Channel display time in automatic mode.
• TA: Scan Time (0.2-9.9 sec) - Channel sampling time.
• KS: Number of Channels (1-32) - Total physical and virtual channels.
• GS: Number of Analog Inputs (1-KS) - Inputs to be used. Note: Max 16 for devices with relay cards.
• UNIT: Temperature Unit (°C / °F) - For TC and RT inputs.
• ADrs: Device Communication Address (1-31) - For RS-485.
• BAUD: Communication Speed (9.6 / 19.2 / 38.4) - Bits per second.
• PRTY: Parity (NONE / ODD / EVEN) - For communication.
• RP: Number of Repeat (0-12) - Scans before alarm indication.
• Ct1, CT2: Control Type (PULS / CONT) - Relay energizing mode (pulsed or continuous).
• PLNG: Pulse Length (1-2 sec) - Energizing period for pulsed relays.
• AO1S, AO1R: Analog Output 1 Source (1-KS) / Range (0-20, 20-0, 4-20, 20-4).
• AO2S, AO2R: Analog Output 2 Source (1-KS) / Range (0-20, 20-0, 4-20, 20-4).

2.2.2. Alarm Configuration Page (ACNF)

Configures alarm set points, hysteresis, types, and relay assignments for each channel.

• CHNO: Channel Number (1-KS) - Channel to configure.
• A1SP: Alarm 1 Set Point (ZERO / SPAN)
• A1HY: Alarm 1 Hysteresis (0-9999)
• A1TP: Alarm 1 Type (OFF / LO1 / HI1 / LO2 / HI2 / LO12 / HI12) - Note: LO2, HI2, LO12, HI12 not available for CHNO=16.
• A1RL: Alarm 1 Relay No - Determines which independent relay (R1-R16) is energized.
• A2SP: Alarm 2 Set Point (ZERO / SPAN)
• A2HY: Alarm 2 Hysteresis (0-9999)
• A2TP: Alarm 2 Type (OFF / LO1 / HI1 / LO2 / HI2 / LO12 / HI12) - Note: LO2, HI2, LO12, HI12 not available for CHNO=16.
• A2RL: Alarm 2 Relay No - Determines which independent relay is energized.

Alarm Principles:

Alarms are generated based on comparing the Process Value (PV) to the Alarm Set Point (ASP), considering Hysteresis (HYS). Alarm types LO1/HI1 direct to common relays (RO1/RO2 for Set 1/2). LO2/HI2 direct to independent relays (R1-R16) specified by A1RL/A2RL. LO12/HI12 direct to both common and independent relays. RP defines the number of scans an alarm condition must persist to trigger. CT1/CT2 define whether common relays RO1/RO2 energize continuously or with a pulse length (PLNG) during an alarm.

Note: When any alarm occurs, the device may switch to manual mode, indicating the channel causing the alarm.

2.2.3. Input Configuration Page (ICNF)

Configures individual input channels.

• CHNO: Channel Number (1-KS) - Channel to configure.
• SCAN: Scan (ON / OFF) - Enables or disables scanning for the channel.
• INPT: Input Type - Defines the input signal type. (See Table 2.1 for options like TCCJ, TC, RT, mA, V, AVG, CUST).
• LINZ: Linearization Type - Applies linearization curves. (See Table 2.2 for options like LIN, SQRT, FCMP, CMP, and thermocouple types).
• DP: Decimal Point - Position for displaying values (0 or 1 for TC/RT, 0-3 for linear).
• SBRK: Sensor Break (LO / HI) - Sets process value during sensor failure.
• ZERO: Zero Adjustment (-1999 to SPAN) - For scaling.
• SPAN: Span Adjustment (ZERO to 9999) - For scaling.
• INS: Input Offset (-1999 to 9999) - Corrects sensor errors.
• TTL2: Totalizer (OFF / MIN / HOUR) - Enables totalization based on instantaneous value per minute or hour.
• Coefficients (K1-K4, C1-C4): Used for arithmetic operations and flow rate calculations.

Table 2.1: Input Types

Table 2.2: Linearization Types

For flow rate measurement (FCMP/CMP), K1/C1 and K2/C2 parameters define pressure and temperature channels/values. For AVG input type, the calculation is shown. For other types, LINZ parameter must be set to LIN. Pressing [Up Arrow] and [Down Arrow] together zeroes the display value.

Channels with numbers greater than the input count are virtual channels, where only AVG input type can be selected.

2.2.4. Security Configuration Page (PRTC)

• DISP: Display Parameter (0-4) - Controls access to pages with incorrect security codes.
• ADJ: Adjustable Parameter (0-4) - Controls adjustment of parameters with incorrect security codes.
• CALE: Calibration (ON / OFF) - Enables calibration access only with the correct security code.
• SCOD: Security Code (-1999 to 9999) - For forgotten codes, press [Enter Button], [Escape Button], and [Mode Toggle Button] together within 25 seconds of power-on.

2.2.5. Calibration Page (CALB)

Warning: Factory calibration is highly stable. Incorrect operations in CALB can corrupt calibration and lead to faulty measurements. Re-calibration is advised only if accurate calibration devices are available.

• 50.MV: 50 mV calibration for the first channel (for Thermocouple, 0-50 mV, 0-1 V, 0.2-1 V inputs). Save by pressing [Enter Button] and [Escape Button].
• 0.DEG: 0°C calibration for Type K thermocouple on the first channel. Save by pressing [Enter Button] and [Escape Button].
• AMB: Ambient temperature compensation, performed after 0.DEG calibration. Save by pressing [Enter Button] and [Escape Button].
• AO1L: Analog Output 1 Lower Limit. Connect an ammeter, adjust parameter until meter reads desired low value.
• AO1H: Analog Output 1 Higher Limit. Connect an ammeter, adjust parameter until meter reads desired high value.
• AO2L: Analog Output 2 Lower Limit.
• AO2H: Analog Output 2 Higher Limit.
• CHNO: Channel Number (1-KS) - Channel to be calibrated.
• 390.R: 390 Ohm calibration for Pt-100 inputs. Save by pressing [Enter Button] and [Escape Button].
• 20.MA: 20 mA calibration for current inputs. Save by pressing [Enter Button] and [Escape Button].
• 00.V: 0 V calibration for voltage inputs. Save by pressing [Enter Button] and [Escape Button].
• 10.V: 10 V calibration for voltage inputs. Save by pressing [Enter Button] and [Escape Button].

2.3. Warning Messages

During normal operation, the display shows channel, measured value, and alarm status. If an input fault occurs, a message replaces the measured value.

2.4. E-680 Connection Diagrams

The back panel has three connection groups: X (processor and power supply), Y (multiplexer or relay card), and Z (multiplexer card only). The number of terminals depends on the model configuration.

Diagram Description:

• Figure 2.3 shows the back panel with connection groups X, Y, and Z.
• Figure 2.4 illustrates the processor card connections for power (F, N) and communication (TRXA, TRXB, GND for RS-485). It warns against touching live terminals while powered.
• Figure 2.5 shows the relay card connections for independent relays R1 through R16.
• Figures 2.6, 2.7, 2.8, and 2.9 detail the multiplexer card connections for Pt-100, Thermocouple (TC), mA current source, and Voltage source inputs, respectively, for channels 1-16.

2.5. E-680 Jumper Settings

Jumper settings on the multiplexer cards must match the input type configured in the ICNF page. Devices have one or two multiplexer cards depending on the channel count (1-16 on the first card, 17-32 on the second). Accessing the second card requires partially disassembling the unit. Multiplexer card address jumpers should not be changed.

Diagram Description: Figure 2.10 shows the top view of a multiplexer card with connectors, channel jumpers (1-16, 17-32), and data cable connections. It indicates jumper configurations for PT-100, TC/mV/V, mA, and 10 V inputs.

2.6. E-680 Communication Connection

The E-680 uses RS-485 for communication with a Modbus protocol. Multiple E-680 devices can be connected to a single communication line, managed by a central unit like a PC or PLC. Standard PCs require an RS-232 to RS-485 converter (e.g., E-IB-10) for connection. Each device on the line must have a unique communication address, set via the ADRS parameter in the GCNF page. The maximum communication line length is 1200 meters.

Diagram Description: Figure 2.11 depicts a typical communication network. It shows a PC connected via an RS-232/RS-485 inverter (E-IB-10) to an RS-485 bus. Multiple E-680 devices (DEVICE-1, DEVICE-2, ... DEVICE-31) are shown connected to this bus, each with its unique address (ADRS=1, ADRS=2, etc.) and TRXA, TRXB, GND communication terminals.