TECALEMIT HDA eco - Notes Concerning Electrical Connection; Relay Contact; Emergency Mode Switch

20 44 1670 001-GB-I
HDA eco
5 RX- RX
6 RX+ TX
PE Earth terminal
X3
UB Pulse generator operating voltage
+5.2V
IG Pulse input
GND Pulse generator ground
ZV Release contact
(Potential-free contact)
GND
LS + Sensor (4–20mA)
Operating voltage +
LS - Sensor
(4–20mA) Operating voltage -
X4 RFID antenna connection
X5 Display connection
X6 Keyboard connection
X7 USB port
X8 Not used
X9 Not used
Switch
Switch No. Position Operation
S1 (DIL-Schalter)
1
On Initialisation
Off Normal operation
2
On Programming
Off Normal operation
LEDs
LED Function Comments
18V 18 V operating voltage present
5,2V 5.2 V operating voltage present
DSR
Serial interface signal DSR active
Remote station
operational
DTR Serial interface signal DTR active HDA eco operational
RxD Serial interface signal RX active Send data
TxD Serial interface signal TX active Receive data
3.1.1 Notes concerning electrical connection
3.1.1.1 Relay Contact
The relay contact for the pump motor is protected by fuse F1 (10 A slow-blow, 5x20.
3.1.1.2 Emergency mode switch
The emergency mode switch bridges the relay contact for controlling the pump, e.g. in
the case of a defective customer activated terminal. In emergency operation mode, no
filling is registered!