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E300 Design Guide 67
Issue Number: 1
Table 4-4 Isolated serial comms lead details
The “isolated serial communications” lead has reinforced insulation as defined in IEC60950 for altitudes up to 3,000 m.
4.4.2 2 wire EIA-RS485 network
The diagram below shows the connections required for a 2 wire EIA-RS485 network, using a master controller with an EIA-RS485 port.
Figure 4-11 2 wire EIA-RS485 network connections
If more than one drive is connected to a host computer / PLC etc, each drive must have a unique serial address see Section 10.2 Slave address and
Section 5.10 Communications
Any number in the permitted range 1 to 247 may be used.
4.4.3 Routing of the cable
A data communications cable should not run parallel to any power cables, especially ones that connect drives to motors. If parallel runs are
unavoidable, ensure a minimum spacing of 300 mm (1 ft) between the communications cable and the power cable.
Cables crossing one another at right-angles are unlikely to give trouble.
4.4.4 Termination
Termination resistors should not be required unless the baud rate is set at or higher than 38.4 kBaud. Linking pins 1 and 8 of the drive
communications port connects an internal 120 Ω termination resistor between RXTX and RX\TX\. A resistor should also be connected at the
controller end of the cable.
4.5 Control connections
4.5.1 E300 Advanced Elevator drive control connections
Table 4-5 The control connections consist of:
* Analog inputs can configured and used as digital inputs.
Key:
All analog and digital terminal functions (including the relay) can be programmed in Menu F, Hardware I/O.
Part number Description
4500-0096 CT USB Comms cable
Function Qty Control parameters available Terminal number
Differential analog input * 1 Mode, offset, invert, scaling 5, 6
Single ended analog input * 2 Mode, offset, invert, scaling, destination 7, 8
Analog output 2 Source, scaling 9, 10
Digital input 3 Destination, invert, logic select 27, 28, 29
Digital input / output 3 Input / output mode, destination / source, invert, logic 24, 25, 26
Relay 1 Source, invert 41, 42
Safe Torque Off (STO), Drive enable 1
31
+10 V User output 1
4
+24 V User output 1 Source, invert 22
0V common 6
1, 3, 11, 21, 23, 30
+24 V External input 1 Destination, invert 2
Destination parameter: Indicates the parameter which is being controlled by the terminal / function
Source parameter: Indicates the parameter being output by the terminal
Mode parameter:
Analog - indicates the mode of operation of the terminal, i.e. voltage 0 - 24 V, current 4 - 20 mA etc.
Digital - indicates the mode of operation of the terminal, i.e. positive / negative logic
Slave
0V /TxRx
TxRx
37 2
0V /Rx Rx /Tx Tx
12345
Master
termination resistor
E300
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