DT1400 Limit Switch

Categories: Cabinet, Cabinet / Limit switches, Limit switches

Product features

0-20 mA / 4-20 mA / 0-10 V / 2-10 V / 0-5 V inputs
2 / 4 × limit-relay outputs
Process indicator function
5 digit LED display, 7.6 mm character height
Menu based configuration
0-20 mA / 4-20 mA isolated output
Transmitter supply
24 VDC ±10% power supply or 230 V AC/DC ±10% mains
TS-35 rail mounting, 45 mm width

Type designation

Product description

The DT1400 … Limit switches compare the 0-20 mA / 4-20 mA / 0-10 V / 2-10 V / 0-5 V output signal with the set values.
When the output signal exceed one of the set values the instrument activates the corresponding SPDT relay contact.
The DT1400 … Limit switch is also a process indicator and enable linear process variable to be displayed in engineering unit on its 5 digit LED display.
The instrument is available with the following output options (2 limit-relays are standard, beyond that only one option at the same time):

+2 normally open relay contacts (SPST) for limit switching or for simple control tasks. (In this case 4 limit-relay contacts are in the DT1400.)
0-20 mA / 4-20 mA galvanic isolated, scalable, active or passive current output.
15 VDC, 30 mA, galvanic isolated power supply for two wire 4-20 mA transmitter.

The functional parameters can be set by push-buttons on the front panel of the device, through a simple menu system: input selection, averaging of input signals, scaling, display frequency, limit values, limit operating modes, histeresis, scaling the analogue output, etc. The settings are protected by a two-level password against unauthorised manipulation.
The DT1400 … has two power supply versions:

24 VDC ±10% (DT1400 …)
230 V AC/DC ±10% (DT1400 … PS).

Technical specifications

Safety data:
The connection terminals of the supply voltages are isolated from each other, the isolation is in compliance with the standard EN 61010-1, taking into consideration the following:
Pollution level:	2
Measurement category:	II
Input parameters:
Input signal:	DC current or DC voltage
Measurement range:	0-20 mA / 4-20 mA / 0-10 V / 2-10 V / 0-5 V
Overrange:	±50 mA (current input), ±200 V (voltage input)
Sampling:	12 measurement / sec.
Number of averaged samples:	1 / 2 / 4 / 8 / 16 / 32 / 64 (selectable)
Error of displayed value:	< 0.02% (Ta = 23 °C ±2 °C)
Temperature coefficient:	±40 ppm / °C (max.)
Output parameters:
Analogue output (optional):
Output type:	1 active or passive DC current (scalable)
Range:	0-20 mA / 4-20 mA
Burden:	500 ohm (max.)
Error:	< 0.03% @ Ta = 23 °C ±2 °C
Limit outputs:
Outputs:	2 NO SPST relays (standard), + 2 NO SPST relays (optional)
Contact rating:	30 VDC, 3 ADC / 240 VAC, 3 AAC
Transmitter supply (optional):
Transmitter supply:	15 VDC, 30 mA
Display:
Display:	5 digit (+values), 4 digit (-values), negative sign, decimal point 4 limit output LED
Display unit:	5 digit LED, 7.6 mm character height
Display refresh rate:	0.1 / 0.3 / 0.5 / 1.0 / 1.5 / 2.0 sec. (adjustable)
Manual controls:
Manual controls:	3 membrane push-buttons on the front cover
Power supply:
Power supply:	24 VDC ±10% (DT1400 ...) 230 V AC/DC ±10% (DT1400 ... PS)
Consumption:	3.5 W / 3 VA
Ambient conditions:
Operating temperature range:	0-60 °C (-20 - +60 °C for customer request)
Relative humidity:	90% (max., non-condensing)
Place of installation:	cabinet
Mounting position:	vertical (horizontal rail position)
Electromagnetic compatibility (EMC): accordance with the standard EN 61326
Immunity:	industrial area
Noise emission:	Group 1, Class B
General data:
Housing:	terminal assembly box, rail mounting on TS-35 rail, material: polyamide PA6.6
Connection:	screw terminal
Connection cable:	0.25-2.5 mm²
Dimensions:	45 × 99 × 115 mm (width × height × depth)
Weight:	0.2 kg
Protection:	IP 20

Detailed information see in operating instructions. The Manufacturer maintans the right to change the technical data!