User manual CARLO GAVAZZI WM5-96 PROGRAMMING

[. . . ] WM5-96 Smart Power Quality Analyzer Instruction manual Thank you for choosing our products WM5-96 Smart Power Quality Analyzer WM5 96: · High accuracy (class 0. 2 A/V); · High calculation performances (ARM® technology) for a fast analysis of the signal (FFT up to the 63rd harmonics); · high connection capabilities (RS485 115. 2 kbps, RS232, front optical port). WM5 96 is the state-of-the-art tecnological answer to your needs of power quality analysis. Moreover, you can count on a ISO9001/VISION 2000 certified company structure, an experience of many years and a wide-spread presence both in Europe and all over the world. All this in order to guarantee the customer with a top-quality service and the best products. [. . . ] For example when 300kW are exceeded, the alarm occurs 300kW and a set load is disconnected. Below you'll find the recommended programming: - Enabling of one of the 16 alarms (example: alarm 02 ON). - Choose the variable to be monitored: W system (W) - Choose the type of required alarm: "UP" - Choose if the latch is to be enabled or not:"OFF" 295kW - Choose if the disabling of the first alarm status from the switching of the instrument is to be enabled or not: "OFF" - Set set-point 1: Set 1 = 300kW - Set set-point 2: Set 2 = 295kW - Choose to which digital output the alarm you are programming is to be addressed: "D0" (the "D0" digital output is to be previously enabled to the "alarm" function; in the same menu it's possible to select the desired type of output: "ND or NE"). - Should a DELAY ON (delay on activation) be required, set the desired number of seconds: "5 seconds". - Should a DELAY OFF (delay on deactivation) be required, set the We suggest you to use a delay of a desired number of seconds: "5 seconds" few seconds when disabling the - Choose the kind of logic with which the alarm is to be treated: "OR" alarms in order to avoid the conse(see examples of logic alarm: AND/OR). quence of a switching on and off of the output and the subsequent damaging of the contacts due to fluctuations of the measured signal with a value close to the selected alarm setpoints. Programming WM5 96 WM5-96 Instruction Manual 27 The instrument is able to manage 2 types of alarms: 1. Real alarm = when the alarm is connected to a digital output (relay output or open collector output). The activation of a real alarm causes the switching at fixed light of the "AL" LED on the front of the instrument. The activation of a virtual alarm causes the switching at blinking light of the "AL" LED. In case a virtual alarm and a real alarm occur at the same time, the latter has the prevalence over the control of the above mentioned LED (therefore it will be ON with a fixed light). By exploiting the OR and AND functions, it's possible to connect together more than one virtual alarm and direct them together to one digital output (relay output or open collector output). In any case the limit of 16 programmable alarms will still be valid. Alarm 01 Alarm 02 The above drawing explains the operation of the alarms described in the example. Having the "OR function been chosen for both the alarms, the operation of the digital output can be represented by two contacts in parallel. The enabling of only one of the two alarms will enable also the digital output. 28 Events selection Programming WM5 96 WM5-96 Instruction Manual ******MAIN MENU****** Measure DIGITAL INPUTS DIGITAL OUTPUTS ALARMS EVENTS SELEC. 1. 4. 2. 6 > 2s (AV5) 1 EVENTS SELECTION MENU Measure ALARMS MIN MAX DMD MAX DIG. INPUTS > 2s 2 ****ALARM EVENTS**** ALARM ALARM ALARM ALARM ALARM 2a Go back > 2s 01 02 03 04 05 (OFF) (ON) (ON) (ON) (ON) 2b V1 v2 V3 VL V12 (OFF) (ON) (ON) (ON) (ON) Go back > 2s This sub-menu allows the user to select which events are to be stamped. (1) by means of the " " keys and confirm with "S". Afterwards proceed as follows: ALARMS (2): select if the alarm events are to be stamped. Choose alarms by means of the " " keys and confirm with "S", then , " keys, decide whether the alarm by alarm by means of the " stamping is to be enabled "ON" or disabled "OFF", by pressing the "S" key. MIN, MAX, DMD MAX (2): select whether to store the minimum, maximum and dmd values for each variable measured by the instrument. Select the minimum, maximum or dmd maximum by means of the " " keys and confirm with "S", then select, variable by variable if the storing is to be carried out (2b), choose by means of the " " keys the desired variable and decide whether to enable the storing "ON" or disable the storing "OFF" by pressing the "S" key. INPUTS (2): select whether to store the status variables of the digital inputs. [. . . ] Working of the analogue outputs (y) versus input variables (x) Figure A The sign of measured quantity and output quantity remains the same. Figure D The sign of measured quantity and output quantity remains the same. With the measured quantity being zero, the output quantity already has the value Y1 = 0. 2 Y2. Live zero output. 0 0 50 A 10 mA 100 A 20 mA 0 4 50 A 12 mA 100 A 20 mA Figure B The sign of measured quantity and output quantity changes simultaneously. [. . . ]