L BAL E234 GB MANUAL

5.8 Relay outputs (K1, K2)
Various functions can be allocated to the relay outputs “K1” and “K2” (
IO Setup: function and
inverting relais outputs). Max. contact rating
technical data and connection diagram.
Relays K1
•
Connection of the floating contacts of relay “K1” to the terminals 11, 14, 12.
•
“K1 Function” factory setting:
| 1K | = Operating indication. I.e. energized for operation without
fault, for enable “OFF” de-energized.
Relays K2
•
Connection of the floating contacts of relay “K2” to the terminals 21, 24, 22.
•
“K2 Function” factory setting:
| 2K | = Fault indication. I.e. energized for operation without fault and
for enable “OFF”.
5.9 RS-485 interfaces for MODBUS RTU
The device has two RS-485 interfaces for networking via MODBUS RTU:
1. Interface “1A (1D+)”, “1B (1D-)” for MODBUS Master applications
– Pre-programmed function is output from control circuit 1:
| 1. Control signal (2A) |
e.g. for activating speed controllers for fans or fans with integrated controller and MODBUS
interface (
member MODBUS Master).
The programmable functions correspond to the functions for the analogue outputs described in
the IO Setup.
– Automatic addressing of members via a patented procedure.
It is no longer necessary to address each individual member manually in the network. The “ID”
connection is also assigned (for more information
the following chapter). .
– Integrated failsafe wiring and 150 Ω termination.
2. Interface “2A (2D+)”, “2B (2D-)” for MODBUS Slave applications
– Connection of the device to a superordinate building control system.
– Setting of address and communication parameters
Programming: Menu group MODBUS
Slave.
GND 2A (2D+) 2B (2D-) GND A (D+) B (D-)
CXE / CXG
MODBUS Slave
MODBUS Slave
GND 1A (D+) 1B (1D-) GND A (D+) B (D-)
CXE / CXG
MODBUS Master
MODBUS Slave
ID ID2 ID1
13.03.2013
v_cxe_modbus_master_u_slave_anschl.vsd
Connection MODBUS Slave and MODBUS Master interface
When using telephone flex with four cable cores, we recommend the following allocation:
•
A (D+) = red
•
B (D-) = black
•
ID - ID1/2 = yellow (for automatic addressing for MODBUS Master)
•
GND = white
Operating Instructions POC-M Electrical installation
L-BAL-E234-GB 1614 Index 002 Part.-No.
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