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Chapter 4 – Installation
Dry-Contact Relay
Event Input
RT430/434
4
OUT (RS232 level output with user-programmable signal)
5
GND
6
-
7
V+ (RS232 level voltage reference of the internal converter)
8
422/485 TX+
9
422/485 TX-
The bit-rate, format (number of data bits, party, number of stop bits) and datagram
type can be configured using the Web Interface, as well as the type of signal
transmitted by the pin OUT (pin 4).
Pins 2, 3 and 5 are used for the RS232 interface.
Pins 8 and 9 are used for the RS422 or RS485 interface.
For serial port configuration, see the Configuration chapter.
For existing datagrams details, see Appendix.
The RT430/434 has 1 dry-contact that can be used to remotely signal the locked
state of the unity and to alarm if there is no power on the unit.
When the unit is powered up, the dry-contact relay is normally closed. When the
equipment enters in the locked state, the dry-contact will open. The dry-contact
closes in case the unit does not have enough satellites as reference or the power
supply has failed.
See the Technical Specification chapter for information on switching capacity
limitations.
The RT430/434 has 1 input to detect TTL-Level external events. This input may be
used to verify the PTP signal quality when RT430/434 synchronizes another clock
using PTP. Thus, the TTL output from the PTP Slave clock may be connected to the
event input from RT430/434 in order to measure the signal quality. is used as a slave
(PTP signal received from external source via network).
Figure 20: Dry-contact relay
RT430/434
33
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