Acromag Model 4683-TTM-x AC-Powered RS
Contents
1. UP 32 NODES PER NETWORK SEGMENT SIGNALS AT CONVERTER Rx 2 x RX CTS DSR c lt fat com HOST DEQ gt RX TX ss B l Pe 3 RX lo 5 com 5 COM NOTE JUMPERED PINS NULL MODEM CONNECTIONS WHICH ALLOW COMMUNICATION BETWEEN THE HOST ACROMAG SERIES 4100 4200 STATIONS B N32 _ RED POWER LED RED RS485 FAULT LED SIDE B S1 SET BAUD RATE TO MATCH BAUD RATE OF NETWORK 51 BAUD RATE 1 300 5 4800 2 600 6 9600 3 1200 7 19 2K 4 2400 8 38 4K t RED RS485 FAULT LED SIDE B TRANSMIT DIRECTION RS232 TO RS485 AND RS485 TO RS232 ANY RS 485 DEVICE 120 OHM TERMINATION RESISTOR REQUIRED AT END OF NETWORK OR LAST DEVICE ONLY The system connection drawing of Figure 4 is for general illustration purposes only Johnson Controls customers should instead refer to the Metasys Network Technical Manual for N2 Bus Communication connections using the 4683 TTM x repeater Acromag Inc Phone 248 624 1541 e Fax 248 624 9234 e E mail sales acromag com e On Line http www acromag com2. v MODEL 4SCC TTM 1 we MODEL 4SCC TTM 2 fole ef gis o RS232 TO RS485 SIGNAL CONVERTER FAULT fa B fea Status Baud Rate Status LED s Switches LED s FAULT power W SIDE REMOVE COVER a EOL Jumpers FUSE 3AG 0 5A 250V a 8 eae F TE 5 50 van ie M G W L1 4683 TTM 1 115VAC G 12 11 4683 TTM 2 230VAC L AC AC LO com BD GROUND NETWORK CONNECTIONS RS 485 INPUT OUTPUT SIDE SIDI v ANY RS 485 DEVICE NO TERMINATION RESISTOR UP TO 32 NODES PER NETWORK SEGMENT NETWORK SEGMENT 2 EXTENDED NETWORK UP TO 4000 FEET gt RS 485 B N5 B N32 UP TO 32 NODES NETWORK SEGMENT x Parr MODEL 4683 TTM 1 4683 2 leje Rant e s
3. ees 6 40 0 30 K T 0 30 7 62 TYP 162 56 7 0 7 62 TYP 177 80 2 10 53 34 FIGURE 1 MODEL 4683 TTM X REPEATER MODEL 4SCR TTM X REPEATER MECHANICAL DIMENSIONS Acromag Inc Phone 248 624 1541 Fax 248 624 9234 e E mail sales acromag com e On Line http Avww acromag com EOL JUMPERS EQUIVALENT CIRCUIT 4683 UNITS ONLY Vec JUMPER PAIR ONE SIDE 1200 OHMS 220 OHMS 1200 OHMS FIGURE 2 EOL Jumpers Side A IN elo J1J2 EOL DISABLED ENABLED REMOVE THIS SCREW ON EACH Side B OUT 1 og EOL EOL DISABLED ENABLED MODEL 4683 TTM 1 REPEATER MODEL 4683 TTM 2 REPEATER End of Line EOL Termination Jumper Locations Input Power Fuse Location RS 232 FIGURE 3 5 MODEL 4683 TTM X REPEATER MI STATION CONFIGURATION NETWORK SEGMENT 1 UP TO 4000 FEET 120 OHM TERMINATION RESISTOR REQUIRED RS 485 THIS END 2 1202 is of p o
4. SIGNAL REPEATER SIDE A EOL TERMINATION JUMPERS ENABLED OPTIONALLY YOU MAY CONNECT TERMINATION RESISTORS EXTERNALLY BETWEEN THE RT TERMINALS ADJACENT TO THE NETWORK CONNECTIONS FOR SIDE A AND SIDE BUT THE INTERNAL JUMPERS MUST BE SET DISABLED WHEN USING EXTERNAL TERMINATION SIDE B EOL TERMINATION Sp 120 OHM TERMINATION ANY RS 485 DEVICE RESISTOR REQUIRED AT END OF NETWORK OR LAST DEVICE ONLY The station configuration drawing of Figure 3 is for general illustration purposes only Johnson Controls customers should instead refer to the Metasys Network Technical Manual for N2 Bus Communication connections using the 4683 TTM x repeater Acromag Inc Phone 248 624 1541 e Fax 248 624 9234 e E mail sales acromag com e On Line http www acromag com TRANSMIT DIRECTION RS232 TO RS485 AND RS485 TO RS232 RED RS485 FAULT LED i SET BAUD RATE AT S1 ici POWER LED S16 al a ae Bio 1 OPTION 2 OPTION S1 SET BAUD RATE tO 115VAC 230VAC TO MATCH BAUD L1 AC HI L1 AC RATE OF NETWORKS RS232 TO RS485 CONVERTER i 51 BAUD MODEL 4SCC TTM X W JAC LO L2 AC LO 1 300 5 4800 4 G Ground OST 2 600 6 9600 4 3 1200 7 19 2K GROUND a 4 2400 8 38 4K _ 2 dans 7 FENI l lejo DB
5. 1 below for mounting and clearance dimensions This device is packaged in a rugged aluminum enclosure and no auxiliary enclosure is required for most applications Mounting holes are provided for surface mounting the unit You may use an auxiliary enclosure to protect the unit in unfavorable environments or vulnerable locations Termination Jumpers Any RS 485 network will require that the network be properly terminated at the ends of a network or network segment Termination is usually found at the first and last node of a network segment Since a repeater is used to segment a network two sets of termination resistors will be required One at the input side one at the output side Model 4683 TTM X units include selectable End Of Line EOL termination resistors that can be enabled or disabled by positioning jumper blocks on headers installed on the circuit board see Figure 2 You will have to remove the top cover to gain access to these jumpers Be sure to turn power OFF before removing the cover or setting these jumpers Simply remove the single screw on each side of the enclosure and slide the top cover off Refer to Figure 2 of the following page to locate and set these jumpers as required for your installation Optionally you may leave these jumpers in their disabled position and attach 1200 termination resistors externally between the RT terminals adjacent to the network connections Setting The Baud Rate The unit includes a
6. B AC power and chassis ground Common mode voltages of up to 250Vrms or 354V DC withstands a 1500V AC dielectric strength test for 1 minute without breakdown are permitted on a continuous basis This complies with test requirements outlined in ANSI C39 5 1974 for voltage ratings specified RFI Resistance Withstands an RFI field strength of 10V per meter at 27MHz 151MHz and 467MHz with no digital effect per SAMA PMC 33 1 test procedures Line Noise Effects Field and power line terminals withstand ANSI IEEE C37 90 1978 Surge Withstanding Capability SWC Test with no component failures Unit is tested to a standardized test waveform that is representative of surges high freq transient electrical interference observed in actual installations Communication Connections Network repeater both RS 485 connections use modular terminal blocks with screw clamps Wire range is 14 to 26 AWG CSA approved Power Wire Connections Network repeater terminal block See label on unit for power to be applied to unit Approvals UL Listed CSA Certified file LR25710 Shipping Weight 3 0 pounds 1 4 kg packed per unit Acromag Incorporated 30765 South Wixom Road P O Box437 e Wixom MI e 48393 7037 USA Phone 248 624 1541 Fax 248 624 9234 e E mail sales acromag com e On Line http Avwww acromag com Copyright 1990 Acromag Inc Printed in the USA 8500 267 B04C016 REPEATER INSTALLATION Mounting Refer to Figure
7. 25 el A POWER L1 W 115VAC OR CONNECTION 1 2 230VAC REQUIRED S DE9 UP TO 32 ANY Roiss g DEVICES SEGMENT 30 A N31 1 OPTION 2 OPTION 115VAC 230VAC RS485 Hl L1 AC LO L2 AC LO G Ground G Ground SEE UNIT LABEL TO VERIFY POWER REQUIREMENTS IMPORTANT MODEL 4683 TTM X UNITS INCLUDE INTERNAL FIELD SELECTABLE END OF LINE EOL TERMINATION RESISTORS FOR THE A AND B SIDES THESE ARE ENABLED VIA INTERNAL JUMPERS DO NOT USE EXTERNAL TERMINATION WITH INTERNAL EOL JUMPERS ENABLED RS232 FIGURE 4 MODEL 4SCC TTM X CONVERTER MODEL 4683 TTM X REPEATER SYSTEM CONNECTIONS RS485 acromag NO RS485 REPEATER MODEL 4683 TTM X TE SIDE A AND SIDE B EOL TERMINATION JUMPERS ENABLED HOST PC o RS232 CONNECTIONS TO HOST COMPUTER EXTENDED NETWORK
8. Acromag THE LEADER IN INDUSTRIAL YO INSTRUCTIONS Model 4683 TTM x AC Powered RS 485 Network Repeaters These instructions are presented in abbreviated form Please visit our web site at www acromag com to register and obtain the complete User Manual 8500 237 for this product MODEL DESCRIPTION Model Power 4683 TTM 1 15 4683 TIM 2 230V AC These devices are rugged RS 485 network repeaters used for isolating network signals and extending communication distances Model 4683 TTM x units are similar to the Acromag Model 4SCR TTM x models but add field selectable End Of Line EOL network terminations on board for both the A and B sides and are UL approved Operation is transparent to all other network devices and no handshaking is required Up to 32 RS 485 devices can be driven These repeaters are enclosed in a rugged aluminum enclosure and come ready to mount on any base plate or can be installed into a NEMA enclosure for harsh environments Installation is as simple as mounting setting the baud rate connecting and terminating the network and connecting power FEATURES e handshaking amp No extra control lines required e Full I O signal isolation e Supports baud rates of 300 600 1200 2400 4800 9600 19 2K and 38 4K switch selectable e Field selectable End of Line EOL network terminators on both the A input and B output sides e Transient protection installed to help
9. n 8 position DIP switch S1 along the bottom edge This switch is used to set the baud rate of the repeater Only the switch that corresponds to the required baud rate should be closed refer to label information next to 1 all other switches must be left in the OPEN position Electrical Connections Refer To Drawing 4501 783 Terminals can accommodate wire from 14 26 AWG solid or stranded 1 Network Input Side A amp Output Side B Connect unit as shown in Figures 3 and 4 Be sure to enable EOL termination as required at the ends of the network Make sure the baud rate DIP switches are set to match the data rate of the network Power Connect AC power as shown in Figure 4 according to model number Input power is fused 3AG type 0 5A 250V Refer to Figure 2 to locate this fuse if the red power LED fails to light with power applied Ground Ground unit at AC input ground G terminal The chassis is common to this earth ground connection ECAA TES ble jejo 9 la e RS 485 RS 485 a SIDE SIDEA ooo 83 4 30 109 22 93 300 5 600 6 600 7 2400 8 4800 9600 BAUD 19 2K RATE 38 4K PONa Q 51 12345678
10. one switch must be closed according to baud rate required for proper operation RS 485 Bus Loading One unit load equivalent RS 485 Bus Drive Complete RS 485 compliance for up to 32 unit loads 31 unit loads if a repeater is used End of Line Termination Network Refer to Figure 1 The EOL termination network is individually selected for both the A and B sides by a pair of shorting clips The A side input is controlled by jumpers J1 amp J2 The B side output is controlled by jumpers J3 amp J4 The EOL network termination is enabled for the A side or the B side when the associated pair of jumpers are positioned over pins 1 and 2 The EOL termination is disabled removed from circuit when the pair of jumpers are positioned over pins 2 and 3 Duplex Half duplex only Data Format Ten bits typical 1 start bit 8 data bits and 1 stop bit Other formats are supported Status Indicators Red power LED red RS 485 bus fault LED s side A and side green transmit LED s A to B and B to A PHYSICAL SPECIFICATIONS Operating Temperature 0 to 70 C 32 to 158 F Relative Humidity RH 10 to 95 RH noncondensing up to 40 C 104 F Power 115VAC 10 50 60 Hz 0 05A Model 4683 TTM 1 230VAC 10 50 60 Hz 0 03A Model 4683 TTM 2 Power Line Fuse 0 5A 250V 3AG type Refer to Figure 1 for fuse location Isolation Unit includes galvanic and optical isolation between RS 485 side A RS 485 side
11. protect connected devices from destructive noise spikes and line transients e Status LED s indicate transmission direction RS 485 bus fault conditions and power e 115VAC and 230VAC models supported OPERATION The Model 4683 TTM 1 amp 4683 TTM 2 network repeaters are used to isolate and boost RS485 signals and extend network distance Each repeater will permit the addition of up to another 32 devices to a network and extend the communication distance another 4000 feet The repeater has two sides referred to as side A and side B Side A typically connects to the network towards the host input side Side B connects to the extended network output side Functionally sides A and B are equivalent Transient signal protection is provided on both RS 485 sides When both RS 485 lines are idle each side is the receive mode When a one to zero transition is detected signifying a start bit on either side the opposite side s transmitter is enabled half duplex The transmitter stays enabled for one character s time based on the baud rate switch setting The character received is then passed through The repeater receives AC power through a three screw terminal strip Input power is fused and isolated Model 4683 TTM 1 units require 115VAC 4683 TTM 2 units require 230VAC COMMUNICATION SPECIFICATIONS Baud Rates DIP switch settings on unit for 300 600 1200 2400 4800 9600 19 2K amp 38 4K baud rates Only
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