Robonic Automatic Transfer Switches Operation and Maintenance Manual Instruction leaflet IL 30-471 (E) November, 1995 Supersedes issue dated October, 1994 INDEX Warranty ..................................................................... 2 General Description ................................................... 3 LRO Type Description ................................................ 4 RO Type Description .................................................. 4 SPB Type Description ............................
WARRANTY The Company warrants the apparatus to be supplied hereunder to be of the kind designated or specified. The Company shall repair or replace any defective part or parts, f.o.b. the Company’s factory, repair shop or warehouse, which prove to be defective under normal and proper use within one year from the date of shipment, provided that the Purchaser gives the Company immediate written notice of any such defect or defects.
GENERAL DESCRIPTION MECHANICAL COMPONENT IDENTIFICATION CSA Standard C22.2 No. 178-1978 defines an automatic transfer switch as, “self acting equipment for transferring one or more load conductor connections from one power source to another.” The same Standard also gives definitions for type A and type B automatic transfer switches. “Transfer switch type A means an automatic transfer switch that does not employ integral overcurrent devices.
TYPE “LRO” ROBONIC AUTOMATIC TRANSFER SWITCH TYPE “RO” ROBONIC AUTOMATIC TRANSFER SWITCH Rated 30 amperes through 100 amperes at 600 volts Ac maximum 50 or 60 Hertz. A complete line rated from 150 amperes through 1000 amperes at 600 volts Ac 50 or 60 Hertz. The mechanism is a lever operated device controlled by a 120 volt unidirectional motor. The transfer mechanism consists of the transfer motor, a gear train and two breaker operating cams.
TYPE “SPB” ROBONIC AUTOMATIC TRANSFER SWITCH MANUAL OPERATION FROM NORMAL TO EMERGENCY: Rated 1200 amperes through 3000 amperes at 600 volts Ac, 50 or 60 Hertz. For SPB Automatic Transfer Switches with the four position selector switch, isolate the transfer circuit and engine starting circuit by placing the “FPSS” in the “OFF” position. The SPB Automatic Transfer Switch consists of two basic elements: 1. The power switching panel contains the main power contacts and transfer mechanism.
Table 2 - Recommended Upstream Circuit Protective Device for Type A Robonics, All Classes of Loads Robonic Type Maximum Upstream Continuous Rating (amps) Breaker Frame Size Maximum Upstream Fuse-Rating* Class J or L Class K5 or R LRO LRO LRO 30 70 100 HFD, FDC, HJD, JDC, FB-P 100 100 100 100 100 100 RO RO 150 200 JDC, HKDL, HKD, KDC, HLD, LDC, LA-P 225 225 225 225 RO 225 250 HKD.
OVERALL FUNCTIONAL DESCRIPTION the appropriate dip switches. There are four main groups of functions included in the ATS single board controller. • • • • 1. Voltage Sensing Functions Choices of voltage sensing functions are selectable for Normal and Emergency sources as follows by means of factory programming. • • 1 phase or 3 phase sensing Either or both the undervoltage and overvoltage sensing. 0.1 sec. to 60 sec. 0.16 min. to 10 min. 1 min. to 60 min. 3 min. to 200 min. 4.
If a Robonic transfer switch has been installed in the field, any of these options/functions can be added on site by using the factory programmed “Option Key”. Once the choice options are activated by the installed “option key”; the parameter of each function can be setup by positioning the DIP switches labelled SW1, SW2 and SW3 on the controller circuit board. This allows easy field modification of the control parameter settings at the user’s discretion.
NORMAL SOURCE Undervoltage Sensing Programming EMERGENCY SOURCE Undervoltage Sensing Programming Table 1 Undervoltage Pickup and Dropout Pickup (%) Dropout (%) SW1-1 SW1-2 100 95 90 85 80 ON ON ON 0N ON ON ON 0N ON OFF ON 0FF 95 90 85 80 75 OFF OFF OFF OFF ON ON ON ON 90 85 80 75 70 ON ON ON ON 85 80 75 70 65 OFF OFF OFF OFF Table 3 Undervoltage Pickup and Dropout SW1-3 SW1-4 Pickup (%) Dropout (%) SW2-1 SW2-2 SW2-3 SW2-4 ON ON OFF 0FF 100 95 90 85 80 ON ON ON 0N ON ON ON 0N O
NORMAL SOURCE Underfrequency Sensing Programming EMERGENCY SOURCE Underfrequency Sensing Programming Table 5 Underfrequency Pickup and Dropout Table 7 Underfrequency Pickup and Dropout Pickup (Hz) Dropout (Hz) SW2-9 SW3-1 Pickup (Hz) Dropout (Hz) SW3-2 SW3-3 59 58 57 56 57 56 55 54 ON OFF ON OFF ON ON OFF OFF 59 58 57 56 57 56 55 54 ON OFF ON OFF ON ON OFF OFF 49 48 47 46 47 46 45 44 ON OFF ON OFF ON ON OFF OFF 49 48 47 46 47 46 45 44 ON OFF ON OFF ON ON OFF OFF Overfrequency Sen
DELAY FUNCTION PROGRAMMING Table 12 Normal System Voltage TDNE - Time Delay Normal To Emergency 120 208 220 240 380 400 415 480 600 Table 9 TDNE Range Select RANGE 0.1 sec. to 60 sec. 0.16 min. to 10 min. 1.0 min. to 60 min. 3.0 min. to 200 min. SW3-4 SW3-5 ON OFF ON OFF ON ON OFF OFF TDEN - Time Delay Emergency To Normal Table 10 TDEN Range Select RANGE SW3-6 0.1 sec. to 60 sec. 0.16 min. to 10 min. 1.0 min. to 60 min. 3.0 min. to 200 min.
SOLID STATE LOGIC CONTROL PANEL LOGIC CONTROL VOLTAGE SENSING MODULE COMBINATION VOLTAGE/ FREQUENCY SENSING MODULE Style Number 782OC97GO1 Style Number 782OC99GO1 The module can be programmed to use with 1Ø or 3Ø systems and perform either the undervoltage or the overvoltage sensing function. It is applicable to both emergency and normal source monitoring.
TIME DELAY MODULE BLANK Style Number 782OC96GO1 Style Number 1266C77GO1 Module can be programmed for any one of five timing ranges: 1 - 60 sec. timer 4 -240 sec. timer 0.13- 8 min. timer 0.5 - 32 min. timer 1 - 64 min. timer Use to cover any unused card slots. All can be used to accomplish TDEC, TDEN and TDNE functions. All Cards Mechanically Interlocked All cards are interlocked mechanically to prevent insertion into the wrong function slot.
Programming and adjustments for plug-in sensing control modules. Cards shipped from the factory are programmed to the user’s original specification, or to the standard pickup and dropout values as follows: TIME DELAY MODULE FUNCTION PICKUP DROPOUT Undervoltage Overvoltage 90% 105% 80% 115% Style Number 782OC96GO1 The Timer Card is a multi-range timer. The card may be used as a replacement for older single range timer cards in existing equipment.
COMBINATION VOLTAGE/FREQUENCY SENSING MODULE * For Robonics with control transformer module’s date code dated AFTER Sept. 1/92, follow Table 13 and 14 to program the voltage sensing function. * For Robonics with control transformer module’s date code dated BEFORE Sept. 1/92, follow Table 13A and 14A to program the voltage sensing function. Style No. 782OC99GO1 The card may be used as a replacement for older versions of the plug-in cards in existing equipment.
OVERVOLTAGE PROGRAMMING UNDERVOLTAGE PROGRAMMING 1. Place a jumper on J7. 1. Place a jumper on J6. 2. Insure that there is NOT a jumper on J6. 2. Insure that there is NOT a jumper on J7. 3. Choose the desired pickup and dropout values from TABLE 14 and place jumpers on the pins indicated. 3. Choose the desired pickup and dropout values from TABLE 13A and place jumpers on the pins indicated. 4. For THREE PHASE sensing, place jumper on Jl (see CAUTION below). 4.
OVERVOLTAGE PROGRAMMING Table 15 Overvoltage Pickup and Dropout 1. Place a jumper on J7. PICKUP (Hz) DROPOUT(Hz) JUMPERS 46 47 48 49 44 45 46 47 none J11 J12 J11, J12 56 57 58 59 54 55 56 57 J10 J10, J11 J10, J12 J10, J11, J12 2. Insure that there is NOT a jumper on J6. 3. Choose the desired pickup and dropout values from TABLE 14A and place jumpers on the pins indicated. 4. For THREE PHASE sensing, place jumper on Jl (see CAUTION below).
DT AND DTM TIME DELAY RELAYS TRANSFORMER MODULES Option # 32A and 32B Modules include all necessary control, voltage sensing and logic transformers. Ratings 2 Watts Power Consumption Input coil Voltage - 120 volts at 50/60 Hertz Contact Rating - 10 amperes resistive at 120 volts Operating Temperature Rating - - 30°C to + 65°C Time Ratings - Various available Two versions are available. The standard module has three phase monitoring of the normal source and one phase monitoring of the emergency source.
APPLICATION PORTABLE TEST KIT The Plant Exerciser is a Program Time Switch which functions to start and stop the engine-generator set and transfer switch automatically at pre-selected intervals or times. This electronic timer can be programmed to operate the switch at specific times of the day daily or specific days of the week. The cycle repeats weekly. The Plant Exerciser may be used in two different ways as an accessory for transfer switches.
TYPICAL SCHEMATIC AND SEQUENCE OF OPERATION SWITCH DE-ENERGIZED NORMAL INTERRUPTER CLOSED Consider the Robonic in the normal operating position, with normal power available and the normal interrupter closed. The following are energized: U.V. (undervoltage module), TDES (time delay engine start), and NR (normal relay). The U.V., monitoring all 3 phases of the normal power, senses a dip or loss of voltage which instantly causes NR to deenergize. Contacts NR2 and NR4 open, and contacts NRl and NR3 close.
REPLACING PARTS The Robonic Automatic Transfer Switch has been designed to have all components accessible and readily removable from the front of the panels. The Robonic Transfer Switch is divided into two basic sections. The upper section consists of the main contacts and transfer mechanism, the lower section consists of all the automatic control devices.
TROUBLE SHOOTING D. Robonic Retransfers the Load, but Gen-Set Continues to Run. The Robonic is energized; proceed with care! A. Gen-Set Does Not Start When Test Switch is Operated and Held in “Test” Position. 1. Check Operation. Make sure the Test Selector Switch is held in “test” position longer than the TDES time delay. 2. Check Engine Controls. Make sure control is in “Automatic” position. Make sure batteries are charged and connected. Make sure engine start circuit is wired. 1. Check Operation.
10. Voltage and/or frequency cards may be removed from a ROBONIC (for servicing, etc.) without disruption of power supply to the connected load. Output relays NR and ER, in combination with their timers or drivers, will continue to provide partial protection. Dropout voltage is 50%; pickup voltage is 70%. Note: When servicing logic control, or transformer module, disable the motor circuit. TYPE LRO ROBONICS CAUTION Do not overtighten the pivot screw inside the operating arm.
