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| TECHNICAL SPECIFICATION (7EM) |
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| Case: | ABS black. Self-extinguishing degree V-0 according to UL, VDE and CSA. | ||
| Front Protection: | Designed and tested for IP54 according to IEC 529 and CEI 70-1. | ||
| 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; 89 mm (3.504 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). | ||
| - 24 Vac/Vdc. (±10% of the nominal value). | |||
| Power Consumption: | 11 VA. | ||
| Insulation Resistance: | Greater than 2 GW for 500 Vdc 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: | 500 ms. | ||
| Accuracy: | ±0.2% full scale span or ±1°C, @ 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: | Internal jumper for configuration and calibration parameters. | ||
Control Action |
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| On/Off, PID or Smart AT Autotuning | |||
| Special Function: | Standby alarm sequence. | ||
Inputs (All inputs are factory calibrated and selectable from the keyboard.) |
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| Types: | Thermocouples (J, K, L, N, T) or RTD Pt 100, keyboard configurable. | ||
| Engineering Units: | °C and °F keyboard configurable. | ||
| Reference Junction: | Automatic compensation for an ambient temperature between 0 and 50 °C. | ||
| Line Impedance: | 100 W maximum for TC input. | ||
| 20 W/wire maximum for RTD input. | |||
| Reference Junction Drift: | 0.1 °C/°C. | ||
| Input Impedance: | Greater than 1 MW. | ||
| 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.) | ||
| Calibration: | According to IEC 584-1 and DIN 43710-1977. | ||
Current Transformer Input for OUT 1 Heater Breakdown Detection (Optional) |
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| 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. | ||
Outputs |
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| Main Output: | (Heating) | Relay or SSR (jumper selectable) | |
| - Relay SPDT, contact rating 3 Amps @ 250 Vac on resistive load. | |||
| - Logic output for SSR, 700 W maximum load, short circuit protected. | |||
| Logic Level 1: | 14 Vdc ±20% @ 20 mA max. | ||
| 24 Vdc ±20% @ 1 mA max. | |||
| Logic Level 0: | Less than 0.5 Vdc | ||
| Output 2 | (Cooling or Alarm 1) | ||
| Relay or SSR (jumper selectable) | |||
| - Relay SPST, contact rating 2 Amp @ 250 Vac on resistive load. | |||
| - Logic output for SSR, 700 W maximum load, short circuit protected. | |||
| Logic Level 1: | 14 Vdc ±20% @ 20 mA max. | ||
| 24 Vdc ±20% @ 1 mA max. | |||
| Logic Level 0: | Less than 0.5 Vdc | ||
| Output 3 | (Alarm 2 or Heater breakdown) | ||
| - Relay SPST, contact rating 2 Amp @ 250 Vac on resistive load. (normally open contact only) | |||
Alarms |
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| Alarm Functions: | Process Alarm | ||
| Deviation Alarm | |||
| Band Alarm | |||
| Type of Alarm: | - High/Low (Outside/Inside for band alarm) | ||
| - Direct/Reverse | |||
| - Standby Sequence/No Standby Sequence | |||
| Alarm Hysteresis: | 0.1 to 10.0% of input span or 1 least significant digit. | ||
| Alarm Output: | Relay SPST 2 Amp @ 250 Vac resistive load. | ||
Display Characteristics |
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| Upper Display: | 3 digit 7 segment green LED display; 10 mm high. | ||
| Lower Display: | 3 digit 7 segment orange LED display; 7.6 mm high. | ||
| Indicators: | 1 red LED when main (heating) output is ON. | ||
| 1 red LED when cooling (or alarm 1) output is ON. | |||
| 1 red LED when alarm 2 (or hbd alarm) output is ON. | |||
| 1 red LED when Smart AT is enabled. | |||
