Kele UCM-420A, Operating And Installation Instructions

Page 1: ...UCM 420A Setpoint Controller Operating and Installation Instructions April 1994 TM...

Page 2: ...tions in a SMALL package LOCAL SETPOINT CONTROLLER UCM 420A REMOTE SETPOINT CONTROLLER REMOTE SETPOINT CONTROLLER WITH LOCAL ADJUSTMENT 4 20 mA SIGNAL GENERATOR PULSE WIDTH TO ANALOG CONVERTER OUTPUT...

Page 3: ...uses industry stan dard 4 20 mA or 1 5 VDC input output signals to provide stand alone P I control or output expansion When used as a Stand Alone Controller with Local Setpoint the UCM 420A provides p...

Page 4: ...4 20 mA 1 5 VDC three wire potentiometer or PreCon two wire potentiometer PWM time base 0 1 2 65 5 2 12 85 25 6 seconds or 0 59 2 93 seconds Output 4 20 mA sourcing 1 5 VDC with 250 ohm resistor Outp...

Page 5: ...e extremes corrosive vapors or electromagnetic interfer ence Failure to follow these directions could result in damage to the UCM 420A or other connected equipment as well as affect the manufacturer s...

Page 6: ...the UCM 420A than will fit under the screw on the terminal block connect as follows A Place the 24 VDC minus power wire directly under the common screw B Place one or two short splice wires directly...

Page 7: ...UTPUT 24 VAC OR 24 VDC 4 20 MA REMOTE SETPOINT SIGNAL FEEDBK INPUT 24V PWR 1 2 11 12 JUMPER POSITION NUMBER JUMPER PINS 7 8 9 10 3 4 5 6 PWM INPUT PWM INPUT REM SPT INPUT LOC SPT POT LOC SPT INPUT LOC...

Page 8: ...UT LOC SPT POT COMMON MA SIG OUTPUT INCREASE SETPOINT WHEN A THREE WIRE POTENTIOMETER IS USED JUMPER PLUGS MUST BE LEFT OFF POSITIONS 3 4 5 AND 6 FEEDBK INPUT 24V PWR THREE WIRE POTENTIOMETER 5 KW TO...

Page 9: ...4V PWR 1 2 11 12 JUMPER POSITION NUMBER JUMPER PINS 7 8 9 10 3 4 5 6 PWM INPUT PWM INPUT REM SPT INPUT LOC SPT POT LOC SPT INPUT LOC SPT POT COMMON MA SIG OUTPUT PRECON TYPE 3 THERMISTOR FEEDBK INPUT...

Page 10: ...er temperature sensor and sends a proportional integral control signal to the three way valve to maintain the system hot water temperature as programmed HOT WATER RESET VALVE 4 20 MA P I CONTROL SIGNA...

Page 11: ...e setpoint A 4 20 mA 1 5 VDC or thermistor input with a range of 50 to 90 F from the process being con trolled allows the UCM 420A to monitor the system and provide a proportional integral direct or r...

Page 12: ...ocal Setpoint signal although these are normally remote setpoint signals When these are used as local setpoints in this mode they have the authority to adjust the setpoint 12 5 of the input range A 4...

Page 13: ...ach UCM 420A accepts a 4 20 mA 1 5 VDC or thermistor input with a range of 50 to 90 F from the process being controlled The PWM INPUT terminals are wired to the normally open contacts on a BAS control...

Page 14: ...signal until the signal returns On a power loss the signal is remembered up to six hours When used in this mode the UCM 420A may be programmed to either reverse the signal being monitored or pass it...

Page 15: ...point the saved value will be used for control until a new PWM pulse is received Upon power return on a unit with analog remote setpoint the saved value will be used to control until a new analog setp...

Page 16: ...Direct Acting Control is when an increase in the input signal above set point causes the output signal to increase Reverse Acting Control is when an increase in the input signal above setpoint causes...

Page 17: ...O CONTROLLED DEVICE 4 20 MA OR 1 5 VOLT REMOTE SETPOINT SIGNAL ONLY IF REMOTE SETPOINT IS ANALOG SIGNAL 24 VAC OR 24 VDC PWM SIGNAL FROM BAS ONLY IF REMOTE SETPOINT IS PWM CONTACT AT CONTROLLER Steady...

Page 18: ...PreCon Type 3 Thermistor If the thermistor is used the range of the thermistor input is 50 to 90 F Other ranges available STEP B 2 Set switch A3 in the ON position for Direct Acting Control and in the...

Page 19: ...NT STATUS B A 24 VAC OR 24 VDC POWER 4 20 MA 1 5 VOLT OR THERMISTOR INPUT SIGNAL 4 20 MA SOURCING OUTPUT SIGNAL TO CONTROLLED DEVICE SEE LOCAL SETPOINT WIRING OPTIONS 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 W...

Page 20: ...h B1 Switch B2 Set jumper plugs on 4 20 mA OFF OFF Position 1 1 5 VDC OFF OFF Position 2 PWM ON OFF Position 1 TABLE 10 TABLE 11 FAILSAFE FEATURE On a loss of power the remote setpoint value is retain...

Page 21: ...pot local setpoint Position 6 19 Set Up Instructions Cont Set the DIP switches and jumpers as shown in TABLE 12 for the local setpoint to be used STEP C 4 Select the type of input to be used per TABLE...

Page 22: ...rrect throttling range cannot be calculated but must be adjusted for each application Generally systems that respond quickly should have a nar rower throttling range than systems that respond slowly S...

Page 23: ...TATUS B A 24 VAC OR 24 VDC POWER 4 20 MA 1 5 VOLT OR THERMISTOR INPUT SIGNAL 4 20 MA SOURCING OUTPUT SIGNAL TO CONTROLLED DEVICE 4 20 MA OR 1 5 VOLT REMOTE SETPOINT SIGNAL ONLY IF REMOTE SETPOINT IS A...

Page 24: ...int with local adjustment and set DIP switches and jumpers per TABLE 16 If remote and local setpoints are both enabled the remote setpoint establishes the setpoint and the local setpoint has 12 5 of t...

Page 25: ...ect pulse which matches their address then wait for a set point pulse All other UCM 420As ignore the setpoint pulse and return to the normal operating mode 3 The BAS Controller then sends the new Setp...

Page 26: ...above set point causes the output signal to increase Reverse Acting Control is when an increase in the input signal above setpoint causes the output signal to decrease STEP D 5 Set the proportional th...

Page 27: ...UNIT PWM REM SETPT MUX MODE B A 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 Steady Green Power On Dark Power Loss Steady Red PWM Signal Present Slow Green Blink Attention Mode No PWM Signal Slow Red Green Blink A...

Page 28: ...t switch A3 and A4 should be ON and all other switches OFF For Reverse Acting Output 4 20 mA in and 20 4 mA out or 1 5 VDC in and 5 1 VDC out switch A4 should be ON and all other switches OFF STEP E 1...

Page 29: ...gnal is received The output may be direct or reverse acting Select single unit PWM or multiplexed PWM by setting the switches as shown in TABLE 24 STEP F 1 Select the time base for the control signal...

Page 30: ...CH ON 0 MEANS TURN SWITCH OFF LOCAL SETPOINT FEEDBACK REMOTE SETPOINT STATUS 24 VAC OR 24 VDC POWER 4 20 MA SOURCING OUTPUT SIGNAL TO CONTROLLED DEVICE 24 VAC OR 24 VDC PWM SIGNAL FROM BAS ONLY IF REM...

Page 31: ...generator mode is to be used wiring should be done in accordance with the proper wiring diagram for the mode of operation for which the UCM 420A is to be used If the UCM 420A is not installed when the...

Page 32: ...A1 5 A2 6 A3 7 A4 8 A5 9 A6 10 A7 11 A8 12 DIP switch mA Output B1 13 B2 14 B3 15 B4 16 B5 17 B6 18 B7 19 B8 20 30 TABLE 28 ORDERING INFORMATION The standard unit stocked by Kele is the UCM 420A whic...

Page 33: ...Post Office Box 34817 Zip 38184 2975 Brother Blvd Memphis Tennessee 38133 Phone 901 382 4300 Fax 901 372 2531 TM...