Manuale d’uso / di manutenzione del prodotto T775J del fabbricante Honeywell
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PRODUCT DA T A Copyright © 1995 Honeywell Inc. • All Rights Reserved T775J Electronic Remote T emperature Controller FEA TURES • T775 model pro vides reset control with tw o temperature inputs an.
T775J ELECTRONIC REMOTE TEMPERA TURE CONTROLLER 63-2248—4 2 SPECIFICA TIONS IMPORT ANT The specifications given in this publication do not include normal manufacturing tolerances. Therefore, an individual unit may not exactly match the listed specifications.
T775J ELECTRONIC REMOTE TEMPERA TURE CONTROLLER 63-2248—4 3 Mounting: Mounts on any suitable horizontal or vertical surface. (See Fig. 5 for mounting hole locations.) Dimensions: See Fig. 1. Display Resolution: Sensed temperature and other operating parameters are displayed via a liquid crystal display (LCD) with a resolution of 1 ° F or 1 ° C.
T775J ELECTRONIC REMOTE TEMPERA TURE CONTROLLER 63-2248—4 4 Mounting Sensor in T7047C1090 Case 쐃 Run wires from T775J through wall. 쐇 Mount case to wall with screws provided. 쐋 Connect wires from the T775J to two T terminals on the T7047C Case.
T775J ELECTRONIC REMOTE TEMPERA TURE CONTROLLER 63-2248—4 5 Fig. 5. Feature locations. IMPORT ANT Erratic temperature readings from the 193987GA Sensor can be caused by poor wiring practices that must be avoided to assure proper operation: a. Do not route temperature sensor wiring with building power wiring.
T775J ELECTRONIC REMOTE TEMPERA TURE CONTROLLER 63-2248—4 6 SELECT SET ENTER NO COM NC OUTPUT 1 OUTPUT 2 NO COM NC 120V COM 240V 1 2 3 4 SA SB 1 23 1 2 3 4 5 67 8 SA TOD 24V SB C/F M8113 SENSOR A 240 VAC SENSOR B LOAD 1 LOAD 2 BLK RED Fig. 7. Reset control with 24 V ac input, 24 V ac loads.
T775J ELECTRONIC REMOTE TEMPERA TURE CONTROLLER 63-2248—4 7 SELECT SET ENTER OUTPUT 2 NO COM NC 120V COM 240V 1 2 3 4 SA SB 1 23 1 2 3 4 5 67 8 SA TOD 24V SB C/F M8115A SENSOR A 24 VAC SENSOR B LOAD 1 T1 T2 BR W 1 1 POWER INPUT USE SEPARATE TRANSFORMER FOR T775 WHEN POWERING FROM 24 VOLTS.
T775J ELECTRONIC REMOTE TEMPERA TURE CONTROLLER 63-2248—4 8 Fig. 14. Reset control with Series 90 Modutr ol® Motor . Fig. 13. Reset control with 240 V ac input, 240 V ac and 0 to 18 Vdc loads.
T775J ELECTRONIC REMOTE TEMPERA TURE CONTROLLER 63-2248—4 9 Use shielded cable if any of the above conditions cannot be avoided. Device Setup 쐃 Determine the loads to be controlled and the operating mode (heat or cool) and enter on the worksheet.
T775J ELECTRONIC REMOTE TEMPERA TURE CONTROLLER 63-2248—4 10 쐄 Determine the desired Reset Direction (up or down) and enter on the Device Programming Worksheet. This will determine if the setpoint for the control Sensor A will be reset up or down.
T775J ELECTRONIC REMOTE TEMPERA TURE CONTROLLER 63-2248—4 11 쐎 Press Enter to enter the displayed value into memory . 쐅 Press Select four times to return to stage 1 parameters. Scroll through the programming loop a second time to confirm that the appropriate values have been entered into memory .
T775J ELECTRONIC REMOTE TEMPERA TURE CONTROLLER 63-2248—4 12 SELECT SET ENTER O P E N 1234 38 1 4 17 OPEN CLOSED VOLTAGE SPANS WHEN SWITCH IS DEPRESSED, THE VOLTAGE RANGE IDENTIFIED BY THE VOLTAGE SPAN BELOW THAT SWITCH IS SELECTED. IN THIS CASE, A VOLTAGE SPAN ON 8 VDC HAS BEEN SELECTED.
T775J ELECTRONIC REMOTE TEMPERA TURE CONTROLLER 63-2248—4 13 SENSED TEMPERATURE = 78 o F CALIBRATION SETPOINT 75 o F DEAD BAND DEAD BAND MODULATION HEATING MODE THROTTLING RANGE THROTTLING RANGE * D.
T775J ELECTRONIC REMOTE TEMPERA TURE CONTROLLER 63-2248—4 14 temperature goes down, the control point goes down). The type of ratio is selected by using the two DIP switches provided. The four possible reset operating configurations are illustrated and explained in Fig.
T775J ELECTRONIC REMOTE TEMPERA TURE CONTROLLER 63-2248—4 15 • 4-20 mA: This is a general purpose current mode output that can drive a 600 ohm maximum load without output current 12 3 4 OPEN A C B D 12 3 4 OPEN A C B D 12 3 4 OPEN A C B D 12 3 4 OPEN A C B D A.
T775J ELECTRONIC REMOTE TEMPERA TURE CONTROLLER 63-2248—4 16 degradation. This modulation output can be used with Honeywell Inc Modutrol IV TM Motors that accept an input signal of 4-20 mA or other Honeywell Inc motors with the use of resistor kits.
T775J ELECTRONIC REMOTE TEMPERA TURE CONTROLLER 63-2248—4 17 Display Once power is applied or restored to the device, the display will count down from 210 until the display reads zero, during which time any previously energized outputs will be de- energized.
T775J ELECTRONIC REMOTE TEMPERA TURE CONTROLLER 63-2248—4 18 CHECKOUT After the controller is installed and wired, apply power . Using the programmed control values, verify device operation after completing T able 3. 쐃 As illustrated in the example, record the sensed temperatures for both Sensor A and Sensor B as displayed on the controller .
T775J ELECTRONIC REMOTE TEMPERA TURE CONTROLLER 63-2248—4 19 Ta b le 3. Check out T able . Checkout Table Checkout Table Example Heat or Cool Load 1 Load 2 Reset Value Load 1 Reset Value Load 2 Heat.
T775J ELECTRONIC REMOTE TEMPERA TURE CONTROLLER 63-2248—4 20 Helping You Control Your World Home and Building Control Honeywell Limited-Honeywell Limitée 740 Ellesmere Road Scarborough, Ontario M1P 2V9 63-2248—4 Rev . 9-95 Printed in U.S.A. www .
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Honeywell T775J è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Honeywell T775J - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Honeywell T775J imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Honeywell T775J ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Honeywell T775J, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Honeywell T775J.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Honeywell T775J. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Honeywell T775J insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
