ITP14 Universal process indicator User guide ITP14_2018.05_0279_EN © All rights reserved Subject to technical changes and misprints akYtec GmbH · Vahrenwalder Str. 269 A · 30179 Hannover · Germany · Tel.: +49 (0) 511 16 59 672-0 · www.akytec.
Contents 1 Overview ........................................................................................................................................................ 2 2 Specifications ................................................................................................................................................ 2 2.1 Galvanic isolation ..................................................................................................................................... 2 2.
1 Overview ITP14 is a universally applicable process indicator and can be used with various current or voltage standard signals. The device requires 24V DC auxiliary voltage. It is designed for control and monitoring of industrial processes. 2 Specifications ITP14 can be ordered in two versions. They differ in the display color. Ordering key: Table 2.1 Technical data Power supply Power consumption, max.
− closed non-hazardous areas, free of corrosive or flammable gases Table 2.3 Conditions Ambient temperature Storage temperature IP Code Protection class Relative humidity Permissible range -40…+60 °C -25…+55 °C front IP65, rear IP20 III up to 80% (at +35°C, non-condensing) 3 Intended use The device may only be used in the manner described in this user guide, properly installed and in accordance with the specification. Damages caused by disregarding the instructions of this manual are without liability.
.1 CAUTION Wiring Switch on the power supply only after the wiring of the device has been completely performed ► NOTICE Switch off the device before checking the sensor and connection lines. For circuit integrity check use only the measuring device with the output voltage max. 4.5 V to prevent the device damage. Disconnect the sensor in case of higher voltage. ► NOTICE Signal cables should be routed separately or screened from the supply cables. Only a shielded cable may be used for signal lines. 5.
5.1.1 Input Fig. 5.5 Current sensor wiring Fig. 5.6 Voltage sensor wiring Table 5.1 Terminal assignment Designation 24VDC 24VDC + DODO+ COM U+ I+ 5.1.2 Description Power supply Output Output + Common Voltage input + Current input + Output The NPN transistor output is designed to control the low voltage relay up to 42 V DC / 200 mA ► NOTICE As a precaution against inadvertent current reversal on output, a parallel diode (UVD ≥ 1.3U, IVD ≥ 1.3I) is usually included in the output circuit.
The safe output state can be selected in the parameter out.E. Fig. 6.1 Note: Switching hysteresis: 0.05 x (SP.Hi – SP.Lo). 6.2 Alarm If the control function Cnt is set and the alarm function d.FnC = ON, the display blinks with a frequency of about 2 Hz when the output is switched on (see Fig. 6.1). 6.3 Filter Undesirable signal fluctuations can be suppressed through the adjustable filter in the parameter td “Filter time constant” (see Fig. 6.2 and Table 7.2).
6.4 Square root function The function is intended for transmitters with the square characteristic. To enable the function set the parameter Sqrt = ON. 6.5 Error Table 6.1 Displayed errors Possible cause Signal Display Eг.1 LLLL HHHH |- - - - | Measured value error Measured value is below the lower limit for the selected signal Measured value is above the upper limit for the selected signal Wire break or short circuit (only for 4-20 mA and 2-10 V) Remedy Threshold - - 0-5 mA I < -0.
– if no button was pressed within 20 s, the device returns to the operating mode automatically. Table 7.2 Programming parameters Name Display SP.Lo SP.Lo SP.Hi SP.Hi Parameter Valid value Description Default Lower setpoint limit -999...9999 affected by di.P 0 Upper setpoint limit -999...9999 affected by di.P 30 oFF Heat CooL U П OFF Heating Cooling Alarm outside limits Alarm within limits U Cnt Cnt Control function in.t in.t Input signal td td out.E out.
Fig. 7.1 Device menu Note: 1. The minus sign is displayed in the most significant digit, together with 1. The display range is -199.9...999.9 if di.P = ---.-, 2. When setting the signal limits, take into account that in some cases the correct value cannot be displayed though there is no error indication. Example 1: di.Lo: -999 -> 4 mA di.Hi: 9999 -> 20 mA For the input current of 3.8 mA the correct indication should be “-1068”. Actually “1068” will be displayed. Example 2: di.Lo: -999 -> 4 mA di.
8 Maintenance The maintenance includes: – – – cleaning the housing and the terminals from dust, dirt and debris checking the fastening of the device checking the wiring (connecting leads, fastenings, mechanical damage) The device should be cleaned with a damp cloth only. No abrasives or solvent-containing cleaners may be used. 9 Transportation and storage Pack the device in such a way as to protect it reliably against impact for storage and transportation.
