Trip Amplifier DAT5024.
GENERAL DESCRIPTION
The DAT5024 is a Din Rail mount Trip Amplifier. It can accept a signal from various sensors such as thermocouples, mA, Voltage, mV, or resistors.
On the mA input there is an option to use the auxiliary power supply so both active and passive signals can be used.
The Threshold 1 is programmed as high alarm, while, by dip-switches, it is possible to set the Threshold 2 either as high or low alarm.
The trip level of each threshold can be adjusted by the potentiometers and checked by the test-points located on the front of the device. It is possible to adjust by potentiometers the values of the hysteresis level and delay time.
The isolation between input and power supply is 2000 Vac.
The isolation between input and contacts of relays is 2000 Vac.
The isolation between power supply and contacts of relays is 1500 Vac.
The isolations eliminate the effects of all ground loops eventually existing and allows the use of the converter in heavy environmental conditions found in industrial applications.
The DAT5024 is in compliance with the standard 89/336/EEC on the Electromagnetic Compatibility.
It is housed in a plastic enclosure of 20.5 mm thickness suitable for DIN rail mounting in compliance with EN-50022 and EN-50035 standards.
USER INSTRUCTIONS
The Trip Amp converter DAT5024 must be powered by a direct voltage included in the 18 V to 32 V range.
The power supply must be applied between the terminals Q (+V) and R (-).
The green led PWR switched on shows the right state of supply of the device, while the leds RL1 and RL2 switched on show the state of energizing of the relays relative to the threshold 1 (RL1) and the threshold 2 (RL2).
The input connections must be made as shown in the section " Analog input connections", in function of the device ordered; specify in phase of order the type of input and the input range.
The relays connections must be made as shown as shown in the section " Contacts of relays" To configure and calibrate the device refer to the section “Configuration”.
To install the device refer to the section “Installation instructions”.
THRESHOLD OPERATION
For the high alarm the relay goes on when the input signal is higher than the trip level and after the delay time.
The relay goes off only when the input signal is lower than the trip level minus the hysteresis value or when reaches the minimum value of the input scale and after the delay time.
For the low alarm the relay goes on when the input signal is lower than the trip level and after the delay time.
The relay goes off only when the input signal is higher than the trip level plus the hysteresis value or when reaches the
maximum value of the input scale and after the delay time.
OPERATIVE INSTRUCTIONS
The converter DAT 5024 must be powered by a direct voltage included in the 18 V to 32 V range.
The power supply must be applied between the terminals Q (+V) and R (-).
The green led PWR switched on shows the right state of supply of the device, while the leds RL1 and RL2 switched on show the state of energizing of the relays relative to the threshold 1 (RL1) and the threshold 2 (RL2).
The input connections must be made as shown in the section " Analog input connections", in function of the device ordered; specify in phase of order the type of input and the input range.
The relays connections must be made as shown as shown in the section " Contacts of relays" To configure and calibrate the device refer to the section “Configuration”.
To install the device refer to the section “Installation instructions”.
CONFIGURATION
The trip levels are adjusted by the potentiometers “THR1” and “THR2” located on the front of the device; the delay time and the hysteresis value are the same for both the thresholds.
Follow next steps in order to set the correct trip level value.
1- Refer to the section “ Technical Specification ”, table “Input type” and find the input type in use.
2 – Refer to the unit of measure of the input scale and calculate the voltage value corresponding to the threshold value using the next formula: V = (trip value - min) / (max-min) where: min: minimum value of the input type in use; max: maximum value of the input type in use; trip value: threshold value expressed in the unit measure of input. The obtained value, proportional with the input scale, must be included between 0 and 1 V (*).
3 – Connect a multimeter, selected as Volt, between the test points TP1 and REF. By the potentiometer "THR1", adjust the measure in order to obtain the calculated value in the step 2; with such operation the threshold 1 value has been adjusted. Repeat the same operation for the threshold 2 using the potentiometer “THR2” and the test point TP2 (referred to the test point REF).
4 – Open the door located on the side of device.
5 – Set the type of alarm (high or low) for the threshold 2 by the DIP-switch "SW1" .
6 – Adjust the delay time value (**) by the dedicated potentiometer as indicated in the section “Dimensions and regulations”.
7 – Adjust the hysteresis(***) level by the dedicated potentiometer as indicated in the section “Dimensions and regulations”.
NOTES: (*)The maximum threshold value is internally limited at 98 %, the minimum at 2 %; the values of de-energizing for the relays “Trip value + hysteresis” and “Trip value – hysteresis” are limited to not get over the limits of the scale of measure. (**) The delay time value is the same for the energizing and de-energizing of the relay; the minimum time between these operation it's about 1 second (time to have a stable measure) . (***)The minimum hysteresis level value is internally limited at 0.5 %.
INSTALLATION INSTRUCTIONS
The DAT 5024 device is suitable for fitting to DIN rails in the vertical position. For optimum operation and long life follow these instructions:
When the devices are installed side by side it may be necessary to separate them by at least 5 mm in the following case:
- If panel temperature exceeds 45°C and high power supply voltage (>27Vdc)
- Use of the input auxiliary supply for current input (terminal M).
Make sure that sufficient air flow is provided for the device avoiding to place raceways or other objects which could obstruct the ventilation slits. Moreover it is suggested to avoid that devices are mounted above appliances generating heat; their ideal place should be in the lower part of the panel.
Install the device in a place without vibrations.
Moreover it is suggested to avoid routing conductors near power signal cables (motors, induction ovens, inverters, etc...) and to use shielded cable for connecting signals.
TECHNICAL SPECIFICATIONS
| Input type (*) | Min | Max | Input calibration (1) |
| Voltage | ±0.1% | ||
| 50 mV | 0 mV | +50 mV | Linearity (1) |
| 100 mV | 0 mV | +1000 mV | mV, V, mA +/-0.05% |
| 250 mV | 0 mV | +100 mV | Input impedance |
| 1000 mV |
0 mV |
+250 mV | mV, Tc > 1 M Ohms |
| 10 V | 0 V | +10 V | V > 100 K Ohms |
| Thermocouple | mA < 50 Ohms | ||
| J | -210 °C | +1200 °C | RTD excitation current Typ. 0.6 mA |
| R | -50 °C | +1760 °C | |
| S |
-50 °C |
+1760 °C |
CJC comp.± 0.5 °C |
| B |
+400 °C | +1820 °C | CJC Thermal drift (1) |
| E |
-210 °C | +1000 °C | Line resistance influence (1) |
| T |
-210 °C | +400 °C | mV, Tc < 0.8 uV/Ohm |
| N | -210 °C | +1300 °C | Auxiliary supply |
| RTD | (only for mA input) > 18 V @ 20 mA | ||
| Pt100 | -50 °C | +400 °C | (1) referred to input Span (difference between max. and min. values) |
| Pt1000 | -200 °C | +200 °C | |
| Ni100 | -60 °C | +180 °C | Threshold Adjustable from 2 up to 98% f.s. |
| Ni1000 | -60 °C | +150 °C | Hysteresis Adjustable from 0.5 up to 10 % f.s. |
| Resistance | Delay Adjustable up to 25 sec. | ||
| 250 Ohms | 0 Ohms | 250 Ohms | |
| 2 KOhms | 0 Ohms | 1800 Ohms | |
| Current | |||
| 20 mA | 0 mA | 20 mA | |
| Relays Output | N° 2 SPDT |
| Contact rating | 2A , 250 Vac 2A , 30 Vdc |
| Minimum load | 5 Vdc, 10mA |
| Max Voltage | 250 Vac (50/60 Hz) 110 Vdc |
| Isolation | coil-to-contacts: 2000Vac between contacts: 1000Vac |
| Power supply | |
| Power supply voltage | 18 .. 32 Vdc |
| Current consumption | 80 mA max @ 24 Vdc |
| Reverse polarity protection | 60 Vdc max |
| Isolation voltage | |
| Input – power supply | 2000 Vac 50 Hz, 1 min. |
| Input – contact of relays | 2000 Vac 50 Hz, 1 min. |
| Power supply – contact of relay | 1500 Vac 50 Hz, 1 min. |
| Temperature & humidity | |
| Operative temperature | -20°C .. +60°C |
| Storage temperature | -40°C .. +85°C |
| Humidity (not condensed) | 0 .. 90 % |
| Housing | |
| Material Self-extinguish plastic | DIN rail in compliance with EN-50022 and EN-50035 |
| Weight | about 100 g. |
| EMC ( for industrial environments ) | Immunity EN 61000-6-2 |
| Emission EN 61000-6-4 | |
Dimensions (mm)
Connections
Isolation Structure
