Trip Amplifier DAT5024E configurable by Dip-switches.
GENERAL DESCRIPTION
The DAT5024E is a Din Rail mount Trip Amplifier. It can accept a mA or Voltage signal.
mA input 0-20mA, 4-20mA
Voltage input 0-10V, 0-5V, 2-10V, or 1-5V
The inputs are selectable by the use of DIP Switches on the side of the DAT5024E.
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 1500 Vac.
The isolation between input and the contacts of relays is 1000 Vac.
The isolations eliminate the effect of all ground loops eventually existing and allows the use of the converter in heavy environmental conditions found in industrial applications.
The DAT5024/E 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/E 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 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”.
CONFIGURATION
1) Referring to the tables below, set the input range by the dip-switches SW2.
2)Referring to the unit of measure of the input scale, calculate the voltage value corresponding to the trip level using the next formula:
V1 & V2 = [(trip value . min) * 2.5 V] / (max-min) where:
* trip value: trip level value expressed in the same unit measure of the input;
* min: minimum value of the input range in use;
* max: maximum value of the input range in use. The two trip level values relative to the channels 1 and 2 are independent from each other.
The obtained value, proportional with the input scale, must be included between 0 and 2.5 V (*).
3) Connect a multimeter, selected as Volt, between the test points TP1 (trip 1), TP2 (trip 2) and REF (negative reference). By the potentiometers "THR1" and gTHR2h, adjust the measures in order to obtain the calculated values in the step 2.
4) Set the type of alarm (high or low) by the dip-switches "SW1" (1 & 3) .
5) Adjust the hysteresis and delay time values by the potentiometers TRH and TRD, measuring the voltage between the test-points TP3 (delay) and TP4 (hysteresis) referring to the test point REF.
Delay and hysteresis are the same for both the trips.
It is possible to double the delay selected by the dip-switches SW1 (2 & 4). Ex of configuration: input 4€20 mA, trip 1 as max at 16 mA, trip 2 as min at 8 mA.
V1 = [(16mA - 4 mA) * 2.5 V] /(20 mA - 4 mA) = 1.875 V;
V2 = [(8mA - 4 mA) * 2.5 V] /(20 mA - 4 mA) = 0.625 V;
Dip-switch SW1 settings : Off, Off, On, Off
Dip-switch SW2 settings : Off, On, Off, On
CONFIGURATION TABLES
INSTALLATION INSTRUCTIONS
The DAT5024 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 | |
| Voltage | 0÷10 V, 0÷5 V, 2÷10 V, 1÷5 V. |
| Current | 0÷20 mA, 4÷20 mA. |
| Auxiliary supply (Vaux) | 18 V min @ 20 mA |
| Input impedance | V > 100 M Ohms |
| mA < 50 Ohms |
| Output | |
| Relays | N° 2 SPDT |
| Maximum operating voltage (on resistive load) | 125 Vac, 30 Vdc |
| Maximum operating current (on resistive load) | 0.5 A @ 125 Vac, 1 A @ 30 Vdc |
| Maximum switching capacity (on resistive load) |
62.5 VA, 30 W |
| Isolation between coil and contacts |
1000 Vac |
| Isolation between contacts | 1000 Vac |
| PERFORMANCE | |
| Calibration error | ± 0.1 % of f.s. |
| Thermal drift | 0.02 % of full scale/°C |
| Warm-up time | 3 minutes |
| Power supply voltage | 18 .. 32 Vdc |
| Current consumption | 110 mA max @ 24 Vdc |
| Trip value regulation | Configurable from 2 up to 96 % of f.s. |
| Delay time value regulation (Delay) | Configurable from 1 up to 6 sec. |
| Hysteresis value regulation | Configurable from 1 up to 9.5 % of f.s. |
| EMC ( for industrial environments ) | Immunity: EN 61000-6-2; Emission : EN 61000-6-4. |
| Isolation between Input and Power supply | 1500 Vac, 50 Hz, 1min. |
| Operative temperature | -40°C .. +85°C |
| Storage temperature | 0 .. 90 % |
| Humidity (not condensed) | 0 ÷ 90% |
| Material | Self-extinguish plastic |
| Weight | about 100 g. |
Dimensions (mm)
Connections
Isolation Structure
