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1. The controllers use dry contact Single Pole Double 3 The input LED will always respond to its corresponding relay LED RELAY OUTPUT Throw SPDT relays rated at 250 Volts AC 10 With invert Off the relay LED will be On when the input LED is On Amps 1 2 Hp The terminals are labeled Normally and Off when the input LED is Off With invert On the relay LED Open NO Common and Normally Closed NC will be Off when the input LED is On and On when the input LED l is Off 250 VAC 12A 1 2 Hp Below shows four examples of basic wiring 4 The relay may be wired either NO or NC The normal state of the Alarm Contact No Flow Pump Open No Flow relay is when its LED is O
2. a back panel using two screws through mounting holes located at the corners of the controller or by snapping the controller on 35 mm DIN Rail bad wad maa 1 A M 1 A l EG ao 227 N ce I OO I y OS ba mst C e sur A 225 gt ie Note Always install the controller in a location where it does not come into contact with liquid Connecting switches to input terminals Please note a difference between Dwyer flow switches N channel and P channel Use only the N Channel switches with the TDC series of controller Wire the Red wire to the terminal and the Black wire to the terminal Wire the White wire to the S See the illustration below to indicate wiring for your switch Reversing Red and Black wire will change switch from NC to NO Note connect the Shield wire on the Flow switch to the GND terminal if required INPUT LATCH NPUT1 NPUT2A pror NPUT2B S 24VDC GND 14VDC DSA Waa DNV O 50 mA 25 mA Max Max x oO x alal gel in z mr NC Wiring NO Wiring LED Indication Use LED s located above the input term
3. the NC terminal will be open 5 Time delay Use potentiometer to set delay from 0 15 to 60 seconds Delay occurs during switch make and switch break 6 Input indicators Use these LEDs for indicating Flow or No Flow status of switch For NC wiring an Amber LED indicates No Flow and no LED indicates Flow For NO wiring an Amber LED indicates Flow and no LED indicates No Flow 7 Invert switch This switch reverses the logic of the relay control in response to the switch conditions that used to energize the relay will now de energize the relay and vice versa 8 Latch switch TDC This switch determines how the relay will be energized in response to the two sensor inputs When LATCH is OFF the relay responds to switch Input 2A only when LATCH is ON the relay will energize or de energize only when both switches 2A and 2B are in the same condition Flow or No Flow The relay will remain latched until both switches change conditions 9 Input terminals Connect the switch wires to these terminals Note the polarity is a 24 VDC 50 mA power supply connected to the red wire of a Dwyer flow switch and is the common ground path from the switch connected to the black wire Also the S is a 14 VDC 25 mA supply connected to the white wire If polarity between the red and black wires is reversed the switch will change from NC to NO Step Four Panel DIN Rail Mounting The controller may be mounted by either
4. PP Dual Flow No Flow Controller Make a Fail Safe System Design a fail safe system that accommodates the possibility of relay or power failure If power is cut off to the controller it will de energize the relay Make sure that the de energized state of the relay is the safe state in your process For example if controller power is lost a pump will turn off if it is connected to the Normally Open side of the relay While the internal relay is reliable over the course of time relay failure is possible in two modes under a heavy load the contacts may be welded or stuck into the energized position or corrosion may build up on a Dimensions lt 3 9 K oa waa j O oaa Eeo POWER INVERT DELAY INVERT DELAY 8 moe aJn a O O O RELAY 1 RELAY 2 1 8 27 my an meor neurea i neures O SS aaa as SH lt 3 1 gt i lt 3 6 gt Approval Label TDC1 Faceplate GR LR79326 3 k O z NRTL C Power Supply EA 120 240 VAC 50 60 Hz 5 Watt Maximum Relay Rating 250 VAC 10 A 1 2 Hp Refer to the instruction manual for installation TDC2 Faceplate instructions 2 S E aaa s eot zo contact so that it will not complete the circuit when it should In critical appl
5. Warranty Service and Repair Dwyer Remote Relay Controller TDC Series Owner s Manual If for some reason your product must be returned for factory service contact Dwyer Inc to receive a Material Return Authorization number first providing the following information 1 Part Number Serial Number 2 Name and telephone number of someone who can answer technical questions related to the product and its application 3 Return Shipping Address 4 Brief Description of the Symptom 5 Brief Description of the Application Once you have received a Material Return Authorization number ship the product prepaid in its original packing to Dwyer Highway 212 at 12 Michigan City IN 46360 ae Please include the information about the malfunction with your product This information enables our service technicians to process your repair order as quickly as possible A Version 1 0 1997 Dwyer Inc SAFETY PRECAUTIONS A About This Manual PLEASE READ THE ENTIRE MANUAL PRIOR TO INSTALLING A Flammable or Explosive Applications TDC series remote mount controllers should not be used with OR USING THIS PRODUCT This manual includes information on two different models of Remote Relay Controllers for Flow applications from Dwyer TDC1 and TDC2 Many aspects of installation and use are similar between the two models A User s Responsibility for Safety Dwyer manufactures several models of controller with different m
6. be 10 to 20 times their steady state load rating The use of a contact protection circuit may be necessary for your installation if the 10 amp rating does not provide an ample margin for such inrush currents GUIDE TO CONTROLS INSTALLATION Step Three o Ola p a fs cS REL 1 REL INPUT1 25 _ Qs ad oyl 1 Power indicator This green LED lights when AC power is ON 2 Relay indicator This red LED will light whenever the controller energizes the relay in response to the proper condition at the switch input and after the time delay 3 AC Power terminals Connection of 120 VAC power to the controller The setting may be changed to 240 VAC if desired This requires changing internal jumpers this is covered in the Installation section of the manual Polarity neutral and hot does not matter 4 Relay terminals NC C NO Connect the device you wish to control pump alarm etc to these terminals supply to the COM terminal and the device to the NO or NC terminal as required The switched device should be a noninductive load of not more than 10 amps for reactive loads the current must be derated or protection circuits used When the red LED is ON and the relay is in the energized state the NO terminal will be closed and
7. ff With the LED On the relay is in the energized mode and all terminal connections are reversed 7 5 TDC model only Latch ON operation When both input LED s are dJ y ON the relay will be energized red LED On After that if one switch input turns Off the relay will remain energized Only when O Zo oog O ooa oag both switch LED s are Off will the controller de energize the relay N i sas The relay will not energize again until both switch LED s are ON e Wo olo J e k O Jk OO Reversing Invert switch will reverse logic See the Logic Chart necay 1ALretay 2 netay 1A_retay 2 below for further explanation v v Note The invert is switched between the Alarm and Pump Wirings Relay Latch Logic Chart Normally Open Normally Closed Invert Off Latch Off Invert ON Latch Off Relay Wiring Relay Wiring oo oo oo 7 27 On Off On Off J InputA _ InputB Relay InputA _ InputB Relay C O C O ON No Effect ON ON _ No Effect Off oA wad o aa waa wea OFF No Effect OFF OFF No Effect On o ee of OO e jao gheo g Invert Off Latch ON Invert ON Latch ON ReLav 1 ALnetay 2 netay 1 ALnetay 2 L Ca E v On Off On Off Note The invert is switched changes between Normally Open and Normally Closed Changing from 120 to 240 VAC InputA _ InputB Relay InputA InputB Relay Remove the back panel of the controller and gently slide the printed ON ON oN ON ON ai circuit board from the housing Use caution when remo
8. ications redundant backup systems and alarms must be used in addition to the primary system Such backup systems should use different sensor technologies where possible While this manual offers some examples and suggestions to help explain the operation of Dwyer products such examples are for information only and are not intended as a complete guide to installing any specific system
9. inals to indicate whether the switch is in a Flow or No Flow state With the flow switch wired NC the Amber LED indicates No Flow and no LED indicates flow Wiring the switch NO reversing the Red and Black wires the Amber LED indicates Flow and no LED indicates No Flow NC Wiring NC Wiring NO Wiring NO Wiring Ambar Off Amber OFF a A A INSTALLATION TROUBLESHOOTING Step Five Step Six VAC Power Input Wiring Controller Logic Note Polarity does not matter with the AC input terminal For all controllers please use the following guide to understand the Greund Ground operation of the Dwyer TDC1 TDC2 controllers m Neutral 7 r Neutral b7 m Hot Hot 1 Make sure the Green power LED is On when power is supplied to the ia controller owy a eo o Ck aa BEA OS eae wee a 2 For NC switch wiring the input LED s on the controllers will be OO 120 VAG 50 60 Hz O O eta 240 VAC 50 60 Hz mare Amber when the switch reads No Flow and Off when the switch a reads Flow Relay Input Wiring
10. ounting and switching configurations It is the user s responsibility to select a controller model that is appropriate for the application install it properly perform tests of the installed system and maintain all components A Electrical Shock Hazard It is possible to contact components on the controller that carry high voltage causing serious injury or death All power to the controller and the relay circuit s it controls should be turned OFF prior to working on the controller If it is necessary to make adjustments during powered operation use extreme caution and use only insulated tools Making adjustments to powered controllers is not recommended explosive or flammable liquids which require an intrinsically safe rating If you are unsure of the suitability of a controller for your installation consult your Dwyer representative for further information A Install In a Dry Location The controller housing is not designed to be immersed It should me mounted in such a way that it does not come into contact with liquid Its case is made out of PP polypropylene Refer to an industry reference to ensure that compounds that may splash onto the controller housing will not damage it Such damage is not covered by the warranty A Relay Contact Rating The relay is rated for a 10 amp resistive load Many loads such as a motor during start up or incandescent lights are reactive and have an inrush current characteristic that may
11. ving the PCB OFF ON No Change _OFF ON No Change Located jumpers JWA JWB and JWC on the PCB To change to 240 ON OFF No Change ON OFF No Change VAC remove jumpers from JWB and JWC and place a single jumper OFF OFF OFF OFF OFF On across JWA To change to 120 VAC remove jumper JWA and place jumpers across JWB and JWC 120 VAC 240 VAC JWA JWA fo ro JWB i QO SPECIFICATIONS Step Two Supply voltage 120 240 VAC 50 60 Hz Consumption 5 Watt Sensor supply 13 5 VDC 100 mA Relay type TDC1 1 SPDT TDC2 1 SPDT 1 Latched SPDT Relay load 250 VAC 10A 1 2 hp Relay mode Selectable NO or NC Time delay 0 to 60 seconds LED indication Sensor relay amp power status Fail safety Power fail safe Temperature range F 40 to 158 C 40 to 70 Enclosure rating Panel or 35 mm DIN Rail EN 50 022 Enclosure material Polypropylene U L 94 VO Certificate number LR 79326 3 CSA NRTL Functional Diagram A N s J Relay Relay 1 e in LC82 NOO Latch Invert Logic Sensor gt Time Dela Input L 1 aS aS CO Sieie xo a egHe ie Supply At B GNDO _ y Latch Invert Logic Time Delay P Ne d d a CO O Relay Relay 2 in LC82 NOO Part Number Information Part Mat l Description TDC1 PP Flow No Flow Controller TDC2

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