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| TECHNICAL SPECIFICATION (7EF/7HF) |
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| Case: | ABS black. Self-extinguishing degree V-0 according to UL,VDE and CSA. | ||
| Front Protection: | Designed and tested for IP65 and NEMA 4X for indoor locations (when panel gasket is installed). | ||
| Installation: | Panel mounting by means of brackets. | ||
| Rear Terminal Block: | Up to 21 screw terminals, with safety rear cover. | ||
| Dimensions: | 48 x 96 mm (1.890 x 3.780 in.) according to DIN 43700; 116 mm (4.567 in.) deep. | ||
| Weight: | 400 grams maximum (1 pound). | ||
| Power Supply (Switch Mode): | 100 to 240 Vac, 50/60 Hz (10% to -15% of the nominal value). | ||
| Power Consumption: | 11 VA. | ||
| Insulation Resistance: | Greater than 100 MW according to IEC 348. | ||
| Isolation Voltage: | 1500 Vrms according to IEC 348. | ||
| D/A Conversion: | Dual slope integration. | ||
| Noise Immunity: | a) | Electrical fast transient/burst requirements: Severity Level 3 (according to IEC 801-4). | |
| b) | Electric discharge requirements: Severity Level 8 (according to IEC 801-2). | ||
| Sampling Time: | 250 ms for linear inputs. | ||
| 500 ms for TC or RTD inputs. | |||
| Accuracy: | ±0.2% full scale value @ 25°C and nominal power supply voltage. | ||
| Common Mode Rejection Ratio: | 120 dB @ 50/60 Hz. | ||
| Normal Mode Rejection Ratio: | 60 dB @ 50/60 Hz. | ||
| Operating Temperature: | From 0 to 50°C. | ||
| Storage Temperature: | From -20 to 70°C. | ||
| Humidity: | From 20% to 85% RH non-condensing. | ||
| Protection: | a) | Watch dog for automatic reset. | |
| b) | DIP Switches for configuration and calibration parameters. | ||
Inputs (All inputs are factory calibrated and selectable from the keyboard.) |
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| Thermocouple Types: | J, K, L, R, S and N are keyboard configurable. | ||
| Engineering Units: | °C and °F keyboard configurable. | ||
| Sensor Break: | Downscale or upscale programmable. On RTD inputs, an OVERRANGE is indicated when input resistance is less than 15 W (short circuit sensor detection.) | ||
| Reference Junction: | Automatic compensation for an ambient temperature between 0 and 50 °C. | ||
| Reference Junction Drift: | 0.1 °C/°C. | ||
| Input Impedance: | Greater than 1 MW. | ||
| Calibration: | According to IEC 584-1. | ||
RTD Input |
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| RTD Type: | Pt 100 3 wire connection. | ||
| Calibration: | According to DIN 43760. | ||
| Line Resistance: | Maximum of 20 W/wire with no appreciable error. | ||
| Engineering Units: | °C and °F keyboard configurable. | ||
| Sensor Break Detection: | Open sensor (one or more open wires), and short circuit sensor detection. | ||
mAdc and Vdc Linear Inputs |
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| mAdc Input (Standard): | 0 to 20 mAdc and 4 to 20 mAdc keyboard configurable. | ||
| Input Impedance: | Less than 5 W. | ||
| Vdc Input: | 0 to 5 Vdc and 1 to 5 Vdc, configurable. Input impedance greater than 200 KW. | ||
| 0 to 10 Vdc and 2 to 10 Vdc configurable. Input impedance greater than 400 KW. | |||
| 0 to 60 mVdc and 12 to 60 mV configurable. Input impedance greater than 1 MW. | |||
| Readout: | Keyboard configurable from -1999 to 4000. | ||
| Decimal Point: | Configurable to any position. | ||
Current Transformer Input for OUT 1 Heater Breakdown Detection |
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| (Optional, 7EF/7HF only) | This feature allows measurement of the load current by means of a current transformer and signals an alarm condition when the current is below a pre-programmed threshold value. | ||
| Input Range: | 50 mAac. | ||
| Scaling: | Configurable from 10 Amps to 100 Amps (with a 1 Amp step). | ||
| Resolution: | - for full scale up to 20 Amps: 0.1 Amp. | ||
| - for full scale from 21 Amps to 100 Amps: 1 Amp. | |||
| Active Period: | - for relay output: NO or NC configurable. | ||
| - for SSR output: logic level 1 or 0 configurable. | |||
| Minimum On Time to Perform the measurement: | 50 ms. | ||
Logic Input |
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| The 7EF/7HF is equipped with a logic input to select between the main and auxiliary setpoint (SP or SP2). | |||
Setpoints |
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| Two setpoints available: | - Main Setpoint (SP). | ||
| - Auxiliary Setpoint (SP2). | |||
| Setpoint Transfer: | Transfer between SP and SP2 by logic input (contact closure). Transfer can be either by a step or by a ramp with two different configurable rates of change (ramp up and ramp down). | ||
| Setpoint Limits: | Setpoint low limit and setpoint high limit are configurable. | ||
Control Action |
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| Algorithm: | PID - Smart AT. | ||
| Type: | One (heating) or two (heating/cooling) control outputs. | ||
| Proportional Band: | Configurable | - From 1.0% to 100.0% of the input span for a process with one control output. | |
| - From 1.5% to 100.0% of the input span for a process with two control outputs. | |||
| Setting the PB equal to 0 changes the control action to ON/OFF. | |||
| Hysteresis (for ON/OFF control action): | Configurable from 0.1% to 10.0% of the input span. | ||
| Integral Time: | Configurable from 20 seconds to 20 minutes (or off). | ||
| Derivative Time: | Configurable from 1 second to 10 minutes (or off). | ||
| Integral Preload: | Configurable: | - for 1 control output, from 0 to 100% of the output range. | |
| - for 2 control outputs, from -100% to 100% of the heating/cooling output range. | |||
| Out 1 (heating) Cycle Time: | From 1 to 200 seconds. | ||
| AUTO/MANUAL Mode: | Selectable by front pushbutton. | ||
| AUTO/MANUAL Transfer: | Bumpless. | ||
| Two Control Outputs (Heating/Cooling) | |||
| Relative Cooling Gain: | Keyboard configurable from 0.20 to 1.00. | ||
| Cooling Cycle Time: | From 1 to 200 seconds. | ||
| Overlap/Deadband: | Keyboard configurable from -20% (deadband) to 50% (overlap) of the PB. | ||
| NOTE: | By setting the proper cooling medium (air, oil or water) during configuration, the instrument will automatically set the cooling (OUT 2) parameters. | ||
Control Outputs |
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| Type: | Time Proportioning. | ||
| Direct/Reverse Action: | Keyboard configurable. | ||
| Output Level Indication: | Separately display of the Output 1 level (heating) and the Output 2 level (cooling). | ||
| Output Status Indication: | Two LED indicators (OUT 1 and OUT 2) are lit when their respective output is ON. | ||
| Output Level Limits: | - For 1 control output: From 0 to 100% of the output span. | ||
| - For 2 control outputs: From -100 to 100% of the main (heating) output span. | |||
| This function can be made active at instrument startup for a configurable time, and it can be left active in order to avoid thermal shock or preheating. | |||
| Relay Outputs Output Cycle Time: | Configurable from 1 second to 99 seconds. | ||
| Output 1: | SPDT contact. The selection of the NO or NC contact is made by jumper. | ||
| Contact Rating: | 3 Amps at 250 Vac on a resistive load. | ||
| Output 2 (Cooling): | SPST contact with rated current 2 Amps at 250 Vac on a resistive load. | ||
| Logic Voltage for SSR Driver (Output 1 Only): | |||
| Logic Level 0: | Less than 0.5 Vdc. | ||
| Logic Level 1: | 14 Vdc ±20% @ 17 mA max. | ||
| 24 Vdc ±20% @ 1 mA max. | |||
| Output Safety Value: | When the instrument detects an out of range or a sensor break condition, it can force the output to a configurable safety value. | ||
Output Disable Function |
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| This function disables the control output allowing the instrument to operate as an indicator. When control is resumed, “turn off” is disabled and the instrument will operate as follows: the integral component of the output signal will be set to zero, the soft start function will be enabled, and the alarm masking function will be enabled. | |||
Alarms |
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| This instrument is equipped with two independent outputs configurable as: | |||
| - Heating + Alarm 1 + Alarm 2 | |||
| - Heating + Cooling + Alarm 1 | |||
| An optional 4 output is available as Alarm 3 or the heater breakdown alarm output. | |||
| Output Action: | Direct or reverse function configurable. | ||
| Alarm Functions: | Each alarm can be configured as process alarm, band alarm or deviation alarm. | ||
| Alarm Reset: | Automatic or manual reset programmable on each alarm. | ||
| Alarm Masking: | Each alarm can be configured as a masked or standard alarm. Alarm masking allows suppression of alarm indicators at startup and after a setpoint change. | ||
| Alarm Indications: | Two indicators show when the respective alarm is ON. | ||
| Alarm Outputs: | Two SPST relays. Contact rated at 2 Amps, 250 Vac on resistive load. | ||
| Process Alarm Operating Mode: | High or low configurable. | ||
| Alarm Setpoint: | Configurable in engineering units within the entire range. | ||
| Hysteresis: | Configurable from 0.1% to 10.0% of the input span. | ||
| Band Alarm Operating Mode: | Inside or outside band configurable. | ||
| Alarm Setpoint: | Configurable from 0 to 500 units. | ||
| Hysteresis: | Configurable from 0.1% to 10.0% of the input span. | ||
| Deviation Alarm Operating Mode: | High or low configurable. | ||
| Alarm Setpoint: | Configurable from -500 to 500 units. | ||
| Hysteresis: | Configurable from 0.1% to 10.0% of the input span. | ||
| Hbd Alarm | (for instruments with heater breakdown input option. | ||
| Operating Mode: | Low alarm. | ||
| Alarm Setpoint: | Configurable in engineering units within the readout span. | ||
Digital Communications (Optional) |
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| Type: | RS-485. | ||
| Protocol Type: | MODBUS, JBUS, or Barber-Colman proprietary polling/selecting. | ||
| Baud Rate: | Keyboard configurable from 600 to 19200 BAUD. | ||
| Byte Format: | 7 or 8 bit configurable. | ||
| Parity: | Even, odd or none configurable. | ||
| Stop Bit: | One. | ||
| Address: | - From 1 to 31 for Barber-Colman protocol. | ||
| - From 1 to 255 for all other protocols. | |||
| Output Voltage Levels: | According to EIA standards. | ||
