Honeywell EXCEL 5000 User Manual

Also see for Excel 5000 System Series: Installation and commissioning instructions Installation instructions Installation instructions Product data

Contents

Honeywell EXCEL 5000 User Manual Manual pdf 94 page image

ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS74-5577–33 (US) 96EN2B-0184 GE51 R0518 (Europe)ParameterNumber Type Brief DescriptionSettingRangeDefaultValue Unit17 Progr. Prio/Rotat(0/1)_P1 (sequential or rotational loadshed method for priority 3 groups) Sequential=00 or 1 0 Integer18 Comm. Safty_Factor_”a” (offset factor for Ideal Curvealgorithm)0-1000 0 Integer19 Int Internal Parameter 0 0 Integer20 Int Internal Parameter 0 0 Integer21 Int Internal Parameter 0 0 Integer22 Int Internal Parameter 0 0 Integer23 Int Internal Parameter 0 0 Integer24 Int Version fix fix Integer25 Int XFM_Number fix 35 IntegerType abbreviations:Display indicates the program´s internal calculated values.Comm. is used by a commissioning engineer to set or adjust specific plant values.Progr. can be preset by the programming engineer (using CARE) and revised by thecommissioning engineer.Int is an internal parameter that you must not modify.Priority Groups and their Switching BehaviorAfter the selected algorithm calculates the power to be switched, software mustdistribute the power value to the XFM 36-1/S/R load control programs. XFM 35determines the priority group (1, 2, or 3) to receive the calculated power value.Priority group 3 has the highest priority (last to be shed); priority group 1 the lowest(first to be shed). A positive power value (power to be switched ON) is sent topriority group 3 first, while a negative value (power to be switched OFF) is sent topriority group 1 first.XFM 35 uses the internal user addresses ID___On_Prio_1/2/3 andID___Off_Prio_1/2/3 to detect the group where at least one load can be switchedON or OFF. XFM 36-1 loads in each priority group set these values.The power value to be switched is transmitted to the priority groups via the XFM´sI/Os Po1/2/3 and Po (see Fig. 1 at the beginning of the Power Demand Control XFMsection).Switching On XFM 36-1 Loads XFM 35 switches on Priority Group 3 XFM 36-1 loads first. It then switches onPriority Group 2 loads and then Group 1 loads.XFM 35 sets the Priority Group 3 Po3 output to a positive switch-on power value aslong as the value of user address ID___On_Prio_3 is 1 (True). After all loads inGroup 3 are on, software sends a zero value (False) to ID___On_Prio_3.XFM 35 then sets the Priority Group 2 Po2 output to a positive switch-on powervalue as long as the value of user address ID___On_Prio_2 is 1 (True). After allloads in Group 2 are on, software sends a zero value to ID___On_Prio_2.XFM 35 then sets the Priority Group 1 Po1 output to a positive switch-on powervalue as long as the value of user address ID___On_Prio_1 is 1 (True). After allloads in Group 1 are on, XFM 35 sends a zero value to user addressID___On_Prio_1.At this point, there are no more loads that can be switched on. All three useraddresses, ID___On_Prio_3, ID___On_Prio_2, and ID___On_Prio_1, are zero.