Instruction/ maintenance manual of the product T775U Honeywell
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INST ALLA TION INSTRUCTIONS 62-0255-07 E4436 T775U Series 2000 Electronic S t and-Alone Controller PRODUCT DESCRIPTION The T775 ele ctronic stand-alone controllers are th e next generation of universal contro ls capable of remot e sensing of tem perature, hum idity , pressure, etc.
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—07 2 T emperature Sensors a (Sensor A or B) The contr oller accept s 1,097 Ohms PTC at 77°F (25°C): • 50021579-001 – S tandard sen s.
T775U SERIES 2000 ELECTRONIC S TAND-ALONE CONTROLLER 3 62-0255—0 7 Controller Dimensions Fig. 1. T775U Dime nsions in inches (mm) . BEFORE INST ALLATION Review th e “Specific ations” on p age 37 before installing the controller. When Inst alling This Product 1.
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—07 4 Use a screwdriver to pry out on ly the knockouts that you will use. If mounting on DIN rail, be sure to remove th e knockouts before mou nting. See “Cont roller Wiring ” on page 7 and Fig.
T775U SERIES 2000 ELECTRONIC S TAND-ALONE CONTROLLER 5 62-0255—0 7 Fig. 3. Paralle l-series wiring of sensors. T emperature Sens or Wire T ype and Size T emperature sens ors use standard AWG 18/2 u nshielded wire. For cab le runs greate r than 25 f eet or where electrical interf erence may be a problem , shielded cable is recommend ed.
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—07 6 Fig. 5. Sensor Wiring — 3-wire shie lded cable connection from Sensor A to 0-10 Vdc sensor (H76xx h umidity sensor shown). Fig. 6. Sensor Wiring — 2-wire shie lded cable connectio n from 4-20 mA senso r to T775 control ler (loop powered wiring).
T775U SERIES 2000 ELECTRONIC S TAND-ALONE CONTROLLER 7 62-0255—0 7 Controller Wiring WARNING Electrical S hock Hazard. Can cause seve re injury , death or propert y damage. Disconnect power supply before be ginning wiring, or making wiring connect ions, to preve nt electrical shock or equipment da mage.
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—07 8 Controller Wiring Det ails The wiring conn ection terminals are shown in Fig. 1 1 and are described in T able 2. See F ig. 12 – Fig . 18 beginning on page 9 for typical T77 5U wiring applications .
T775U SERIES 2000 ELECTRONIC S TAND-ALONE CONTROLLER 9 62-0255—0 7 WIRING APPLICATION EXAMPLES Fig. 12 – 18 illustr ate typical contro ller wiring for variou s applications.
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—07 1 0 Fig. 17. Wi ring for Series 90 Modutr ol Motor Control. Fig. 18. Wi ring for Changeo ver Relay and Minimum Position Pote ntiometer used with Series 90 Modutro l Motors.
T775U SERIES 2000 ELECTRONIC S TAND-ALONE CONTROLLER 1 1 62-0255 —07 Fig. 19 shows how sensor resistance varies with temperat ure for a sens or having a pos itive temper ature coefficient (PTC) of 2.1 Ohms per degre e F (3.85 Ohms per degr ee C). Fig.
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—07 1 2 Up and Down Arrow Butto ns ( S and T ) Use thes e buttons to m ove your sele ction up and d own through a m enu or list. • When the desired item is highligh ted, you press the X arrow button to display that item’s con tent.
T775U SERIES 2000 ELECTRONIC S TAND-ALONE CONTROLLER 13 62-0255—0 7 NOTES: 1. If you pr ess the HOME bu tton or there is no keypad activity for fo ur minutes, you ex it Program mod e and return to th e home screen. 2. If you pr ess the MENU button , you exit and return to the menu.
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—07 1 4 Setup Procedure The Setup pro cess uses a h ierarchical men u structure that is easy to use. Y ou press the W and X arrow button s to move forwar d and back ward through the menus. NOTE: T he menus can display only those relays tha t are defined in Setup (see “1.
T775U SERIES 2000 ELECTRONIC S TAND-ALONE CONTROLLER 15 62-0255—0 7 Fig. 27. Set up - Sens ors - Sens or A - T ype. 1.2.2.1. TYPE (Sensor A only) 1. From the Sensor A selections, us e the S and T buttons to h ighlight TYPE. 2. Press the X b utton to display the type values.
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—07 1 6 Fig. 30. Setup - Sensors - Sensor A - 0-5V , 0-10V , OR 4-20MA - MI N and MAX V alue (showing °F ). 1.2.2.2.3. MIN or MAX V ALUE (Sensor A only; 0-5V , 0-10V or 4-20mA) The minimum an d maximum valu es display only fo r Sensor A when its type is 0-5V , 0-10V or 4 -20MA.
T775U SERIES 2000 ELECTRONIC S TAND-ALONE CONTROLLER 17 62-0255—0 7 Fig. 33. Setup - Se nsors - Sensor A - Exit. 1.2.2.5. Exi t Sensor A Setup Press the W button to exit Sensor A selections an d return to the Senso rs menu. or Use the S and T buttons to highlight EX IT and pres s the X button.
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—07 1 8 Fig. 36. Setu p - Outputs - Modulating Outpu t Menu. 1.3.1. Sett ing up the Modulating Output s 1. From the Outp ut menu, use th e S and T buttons to highlight the d esired modula ting output (M OD 1 or MOD 2).
T775U SERIES 2000 ELECTRONIC S TAND-ALONE CONTROLLER 19 62-0255—0 7 NOTES: (Integra l Tim ing) 1. The Integral ti me is factory set f or 400 seconds .
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—07 2 0 Fig. 42. Setup - Outputs - Mod Out - Reset. 1.3.1.6. R ESET This selection enable s the controller ’s Reset function , and allows each out put to be individ ually programmed for Reset or No Reset.
T775U SERIES 2000 ELECTRONIC S TAND-ALONE CONTROLLER 21 62-0255—0 7 Fig. 45. Setup - O utputs - Number of Relays. 1.3.2. NBR OF RELA YS 1. From the Out puts menu , use the S and T buttons to highlight # RELA YS . 2. Press the X button to displa y the number of re lays.
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—07 2 2 Fig. 48. Se tup - Out puts - Options - M in Off/On Time. 1.3.3.2. MIN O FF or MIN ON This is the minimum number of seconds of “o ff ti me” or “on time” f or all relays. 1. Press the X b utton to display the Min Off/On value.
T775U SERIES 2000 ELECTRONIC S TAND-ALONE CONTROLLER 23 62-0255—0 7 Fig. 50. Setup - Output s - Options - Show Runti me. 1.3.3.4. SHOW RT (show run time hours) 1. Press the X b utton to display the Show RT values. 2. Use the S and T buttons to sele ct YES or NO.
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—07 2 4 Fig. 54. Setup - Outputs - Relay - Reset. 1.3.4.2. R ESET IMPORTANT For relays to use the Reset function of the con- troller , both m odulating outputs (M OD 1 and MOD 2) must be set for Rese t.
T775U SERIES 2000 ELECTRONIC S TAND-ALONE CONTROLLER 25 62-0255—0 7 2. PROGRAMMING OUTPUTS (MOD AND RELAY) WITH NO RESET The T775U ca n be program med for Reset or No Reset. From the factory , the T775 U is progra mmed for No Reset. This sect ion describe s the step s necessary to program the controller f or No Reset.
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—07 2 6 Fig. 60. Program - Setback. 2.1.3. SETBA CK The Setback temperature op tion displa ys only if scheduling is en abled (see Fig. 47 on page 21) or the DI Option is set to Setback. (see Fi g.
T775U SERIES 2000 ELECTRONIC S TAND-ALONE CONTROLLER 27 62-0255—0 7 Fig. 63. Program - Action. 2.1.6. A CTION 1. From the menu , use the S and T buttons to high- light ACTION. Default: HEA T 2. Press the X b utton to display the action selection s. 3.
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—07 2 8 3. PROGRAMMING OUTPUTS (MOD AND RELAY) WITH RESET The T775U c an be programm ed for Reset or No Reset for each output. F rom the facto ry , the T775U is prog rammed for No Reset. This s ection describes the steps necessary to program t he controller fo r Reset.
T775U SERIES 2000 ELECTRONIC S TAND-ALONE CONTROLLER 29 62-0255—0 7 Fig. 65. Rese t Curve for M OD 1 with Se tback Off set. NOTE: For MOD 2 an d the Relays, a setpoint of fset is used. See “3.3.1. SET POINT OFFS ET (MOD 2 only)” on page 32. The remaind er of this sect ion beginnin g with “3.
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—07 3 0 Fig. 69. Program - Sen sor A Min. Setpoint. 3.2.3. SP MI N A2 or BOILER M IN (Setpoint mi nimum for Sensor A) 1. From the menu , use the S and T buttons to high- light BOILER MIN or SP MIN A2.
T775U SERIES 2000 ELECTRONIC S TAND-ALONE CONTROLLER 31 62-0255—0 7 Fig. 72. Program - Ac tion Selection. 3.2.6. A CTION For the MO D 1 output (a nd for outpu ts with RESET=NO), the ACTION sele ction displays. For all other output s with RESET=YES, the ACTION selection does not display; continue with “3.
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—07 3 2 Fig. 74. Program - Setpoint Offset ( MOD 2 only). Fig. 75. R eset Curve w ith Offset fo r MOD 2.
T775U SERIES 2000 ELECTRONIC S TAND-ALONE CONTROLLER 33 62-0255—0 7 4. SCHEDULING Scheduling provides the ability to set daily temperatu re settin gs for up to two e vents per da y . Ty pically , these ar e the daytim e (setpoint) and the nightt ime (setback ) settings.
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—07 3 4 Fig. 78. Schedul e - Options - Sys tem Time. 4.2.1. SET TIME Setting the system time is required to enable the controller to follow daylight saving t ime. IMPORTANT Set the Dat e before setting the Time.
T775U SERIES 2000 ELECTRONIC S TAND-ALONE CONTROLLER 35 62-0255—0 7 Fig. 81. Schedu le Event Menu (Showing M ON-FRI). 4.3. Setting In dividual Schedules As shown in the Schedu le menu (Fig. 76 on page 33), schedules can be set for the following time period s: • Monday thro ugh Friday • Saturday and Sunday • Individual days of the week 1.
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—07 3 6 Fig. 83. Schedul e - Event 1 Time . 4.3.2. E1 TIME (time for event 1) 1. From the sele cted time period me nu, use the S and T buttons to h ighlight E1 TI ME. 2. Press the X b utton to display the current time s et- ting for ev ent 1.
T775U SERIES 2000 ELECTRONIC S TAND-ALONE CONTROLLER 37 62-0255—0 7 SUMMARY MENU The Summary menu provid es the ability to view the schedule (E1 and E2 times) fo r each relay for ea ch day of the week. NOTE: Schedulin g must be enabled f or the Summary menu to displa y .
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—07 3 8 DoC Emissions Com pliance EN 55022: 20 06 CISPR 22: 2006 VCCI V -3/2006.04 ICES-003, Is sue 4: 2004 FCC P ART 15 SUBP ART B Class B.
T775U SERIES 20 00 CONTROLLER 39 62-0255–07.
T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER Automation and Con trol Solutions Honeywel l Internatio nal Inc. 1985 Douglas Drive N orth Golden Valley, MN 55422 Honeywell Limited-Hon eywell Limitée 35 Dynamic Drive Toronto, Ontario M1V 4Z9 customer.
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If you have not bought Honeywell T775U yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Honeywell T775U - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Honeywell T775U you will learn all the available features of the product, as well as information on its operation. The information that you get Honeywell T775U will certainly help you make a decision on the purchase.
If you already are a holder of Honeywell T775U, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Honeywell T775U.
However, one of the most important roles played by the user manual is to help in solving problems with Honeywell T775U. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell T775U along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
