Electric actuator accessories Figure 777/778 Accessories: electric Anti-condensation heater. Plan view with cover removed Fig. 777/778-012-018 Plan view with cover removed Fig. 777/778-050-070-150 Retrofit procedure Hard wired units 1. Fit heater to switchplate as shown in diagram using M3 screws provided. 2. Connect leads to terminal strip as shown in appropriate wiring diagram. Electronic units 1. Plug heater into socket marked HTR. Note: in all cases ensure that any internal wiring is more than 15 mm away from heater element. www.tycovalves-eu.com Tyco reserves the right to change the contents without notice EUKGH-0058-EN-0108 Electric actuator accessories Figure 777/778 Accessories: electric - anti-condensation heater Heater Heater supply (electronic) Heater Heater Heater supply (1PH & DC hard wired) Heater supply (3PH hard wired) Heater for electronic units (plug-in) Heater for hard wired units Operating specifications Heater type Thermostat Cut out temperature Reset temperature Power consumption - resistance element (wire-wound) self resetting bi-metal type 25°C 20°C 8W to 12,5W Resistance values for different heater voltages Hard wired units Voltage Resistance Working power Rated power (volts) (ohms) (watts) (watts) 12 24 48 110 220 15 68 220 1K 3K9 9.5 8.5 10.5 12 12.5 15 15 15 15 15 110 220 1K 5K1 Electronic units 12.5 9.5 15 15 Tyco reserves the right to change the contents without notice page 2 Electric actuator accessories Figure 777/778 Accessories: electric 6 or 8 limit switch pack. Plan view with cover removed Fig. 777/778-012-018 Plan view with cover removed Fig. 777/778-050-070-150 Retrofit procedure 1. Disconnect all push-on connectors from limit switch pack noting location of each wire for reassembly. 2. Remove M3 screw at base of switch pack. 3. Remove O-ring from top of camshaft and remove circlip if fitted. 4. Lift switch assembly from camshaft taking care not to damage switch operating levers. 5. Fit 2 or 4 additional cams to camshaft orientated as shown in diagram. 6. Fit new switch pack assembly over camshaft taking care not to bend the switch operating levers and locating the moulded pins (on the baseplate of the switchpack) in the location holes in the switchplate, secure using the M3 screw. 7. Rewire in accordance with appropriate wiring diagram. 8. Replace O-ring and circlip to camshaft. Tyco reserves the right to change the contents without notice page 3 Electric actuator accessories Figure 777/778 Accessories: electric - 6 or 8 limit switch pack Switch identification convention Cam orientation Cam profiles for switches 1, 3, 5, 7 end of travel mid travel for switches 2, 4, 6, 8 switches 2, 4, 6, 8 switches 1, 3, 5, 7 Operating specifications Switch details Cam setting procedure 1. Operate actuator to closed position (open position for F777/778-150) 2. Turn cam 1 clockwise until it just operates switch 1 and secure to camshaft using M4 grubscrews in cam. 3. Turn cam 3 clockwise until it just operates switch 3. Turn cam 3 a further 2 to 3 degrees clockwise and secure to camshaft 4. Operate actuator to open position (closed position for F777/778-150). 5. Turn cam 2 anti-clockwise until it just operates switch 2 and secure to camshaft. 6. Turn cam 4 anti-clockwise until it just operates switch 4. Turn cam 4 a further 2 or 3 degrees anti-clockwise and secure to camshaft. 7. Adjust cams 5,6,7,8, by operating actuator to desired switch operating position. Turn appropriate cam until switch operates and secure to camshaft. Cams 5, 7 operate the switches in a clockwise direction. Cams 6.8 operate the switches in a anti-clockwise direction. • standard V9 type, single pole double throw (SPDT) • switch ratings - as table show Voltage Resistive Load (Volts) AC 125 250 DC Up to 15 30 50 75 125 250 Tungsten Lamp Load (Amps) Inductive Load (Amps) NC NO (Amps) 10 10 2 1.5 1 1 10 10 15 10 3 1 0.5 0.25 3 3 0.8 0.6 0.5 0.25 1.5 1.5 0.8 0.6 0.5 0.25 15 10 2.5 0.5 0.07 0.03 Switch functions Switch no. F777/778-012-018-050-070 F777/778-150 1 2 3 4 5 6 7 8 Close limit Open limit Close indication Open indication Close auxiliary Open auxiliary Close auxiliary Open auxiliary Open limit Close limit Open indication Close indication Open auxiliary Close auxiliary Open auxiliary Close auxiliary Tyco reserves the right to change the contents without notice page 4 Electric actuator accessories Figure 777/778 Accessories: electric 1 or 2 potentiometers. Plan view with cover removed Fig. 777/778-012-018 Plan view with cover removed Fig. 777/778-050-070-150 Retrofit procedure 1 Remove O-ring and circlip (if fitted) from top of camshaft. 2. Fit potentiometer assembly over camshaft with gears upwards. 3. Fit spacing pillars between upper switch bracket and potentiometer bracket, using M3 screws through the brackets and spacers and M3 nuts located in the hexagon recesses on the underside of the upperswitch bracket. 4. Fit potentiometer drive gear over the camshaft to mesh with the potentiometer pinion. For dual potentiometers, first turn both potentiometer shafts fully clockwise to ensure that they both operate in phase. 5. Set potentiometer’by operating actuator to fully closed position, turning potentiometer drive gear fully clockwise until mechanical stop is felt, backing drive gear approximately 1/2 tooth, and tightening M4 socket set screw to secure drive gear to camshaft. 6. Refit O-ring and circlip to camshaft. Note Illustration shows typical potentio-meter. Other types may be supplied within assembly. Tyco reserves the right to change the contents without notice page 5 Electric actuator accessories Figure 777/778 Accessories: electric - 1 or 2 potentiometers Operation specifications Maximum power dissipation Temperature range Maximum voltage Insulation voltage Resistance element Resistance tolerance Temperature coefficient Applications 1. Internal pot 2. External pot : : : : : : 2W at 70°C -20°C to + 100°C 300V A.C. or D.C. 750V A.C. cermet ± 10% : 100 x 10-6/°K Standard resistance ranges - Always uses 50000hms. Used to give actuator positional feedback to servo amplifier module or retransmission module. - Used to drive remote position indicators. - Used to give feedback of actuator position to external control devices. 000000- Voltmeter can be calibrated 0° - 90° 0° span adjust 90° Simple remote indication circuit Pot 1 Pot 2 Hard-wired 2 ext. pots Hard-wired 1 ext. pot Electronic 1 ext. pots Tyco reserves the right to change the contents without notice page 6 25000 ohms 5000 ohms 1000 ohms 500 ohms 135 ohms 100 ohms Electric actuator accessories Figure 777/778 Accessories: electric Current loop retransmission module. Plan view with cover removed Fig. 777/778-012-018 Potentiometer Gears Plan view with cover removed Fig. 777/778-050-070-150 Retrofit Procedure for Hard Wired electric actuators Drive Gear Central fixing screws Limit switch assembly M3 fixing screws Limit switch assembly complete with Pot. Assy. Note For reverse acting output i.e. 20mA close and 4mA open, simply reverse the position of the two potentiometer leads on the retransmission terminal block -orange/black to white/red position and vice versa. 1. Remove two central M3 fixing screws on top of the limit switch assembly. 2. Locate retransmission module sub assembly over same two holes with terminal block to bottom. 3. Re-fit M3 fixing screws. 4. Fit 5K potentiometer.• 5. Connect potentiometer wiring to retransmission module as per diagram overleaf. 6. Connect red and blue single wiring, supplied in kit, from retransmission module to terminals 21 & 22 on main terminal block. • See potentiometer retrofit procedure for fitting & setting.) Retrofit Procedure for Hard Wired electric actuators 1. Slacken grub screw on potentiometer drive gear. 2 Remove three M3 fixing screws from potentiometer mounting plate. 3. Move gear/potentiometer assembly upwards on shaft as far as possible to allow access to limit switch mounting plate. 4 Remove two central M3 fixing screws on top of the limit switch assembly. 5. Locate retransmission module sub assembly over same two holes with terminal block to bottom. 6. Re-fit M3 fixing screws. 7. Fit new 5K potentiometer (no.2) thro’ spare hole on existing plate and fit gear/washers etc. similar build to pot (no.1).* 8. Lower potentiometer assembly and gear down on top of three hex pillars and re-fit M3 fixing screws. 9. Connect potentiometer wiring to retransmission module as per diagram overleaf. 10. Connect red and blue wiring with molex plug, supplied with kit, to socket behind customer terminal block. * See potentiometer retrofit procedure for fitting & setting.) Tyco reserves the right to change the contents without notice page 7 Electric actuator accessories Figure 777/778 Accessories: electric - current loop retransmission module Populated board Ext. pot socket Electronic units Hard wired units Operating specifications Supply voltage Output : : Repeatability Temp. stability Power dissipation : : : Max. load Temp. range : : 24V D.C. ± 20% 4 mA actuator closed, 20 mA actuator open '± 1% ± 0.1% per degree C 0.5W at 20 mA 0.1W at 4 mA. 500 ohms 0°C to 40°C Module setting procedures 1. Connect 24V D.C. supply as shown on wiring diagram and also connect a mA measuring instrument in series with the supply. 2. Operate actuator to fully closed position. 3. Turn pots RV1 and RV2 fully anti-clockwise. 4. Adjust RV2 to give 3.6 mA. 5. Operate actuator to fully open position. 6. Adjust RV1 to give 20 mA. 7. Operate actuator to closed position and check that output is 4 mA and re-adjust RV2 if necessary. Tyco reserves the right to change the contents without notice page 8 white/red 24V D.C. supply green/red Int, pot orange/black white/red 24V D.C. supply green/red orange/black Schematic diagram Int, pot
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