Integrated Power Supply 100; Rs485 Module - Modbus Rtu (Option J3) - E+E Elektronik EE310 Operation Manual

4.2 Integrated power supply 100...240 V AC (option AM3, AM5)
For indoor use, surface mounted according NFPA 79 applications only.
This module allows the EE310 to be powered with 100...240 V AC, 50/60 Hz, 2 VA.
AM3
Fig. 27 Power supply module (option AM3, AM5)
Pin assignment of the plug connection see chapter 3.2.2 Connection diagram Option E4.
The AM3 and AM5 options include a 1.25 A time-lag fuse on the 100-240 V side. This fuse may not be
replaced by the user, but only by the E+E Service.
The protection of the supply cable against excess current and short-circuit must be designated to a wire
cross section of 0.8 mm² (AWG 18) (6A fuse). National regulations for installation must be observed!
AM5 In accordance with NFPA 70, NEC and with CSA C22.1, CEC, Part 1. A switch or circuit-breaker
must be included in the installation. It must be marked as disconnecting device for the EE310.
Disconnecting means all current-carrying conductors shall be disconnected. Additional it must be suita-
ble located and easily reached.
4.3

RS485 Module - Modbus RTU (option J3)

Instructions for Modbus-Protocol-Setup please see Application Note AN0103
(www.epluse.com/EE310).
Up to 32 EE310 transmitters with Modbus RTU interface can be connected in a RS-485 bus system.
Slave n
(max. 32)
Slave 3
Fig. 28 Two wire RS485 network
Both ends of the network shall be terminated with a resistor Ra=120 Ohm.
The setup of the Modbus RTU communication can be performed via EE-PCS Product Config-
uration Software or via display and push buttons.
Operating instructions for EE310 Humidity / Temperature Transmitter
Slave 2
Slave 1
AM5
Modbus RTU Master
27