MTS-1730 INPUT/OUTPUT SIGNAL CONDITIONER
MTS-1700 SERIES OPERATION AND REFERENCE MANUAL B-11
CU A002 15A .
MANTA TEST SYSTEMS
B.8.3 Active Input Bank Selection
The MTS-1710 can only monitor 16 input channels (1 bank) at a time. As a result, when more than one bank
exists, the active bank to be monitored must be selected.
This can be done via the OPTION MTS-1730 BANK selection in the front panel menu, or via the DIO,IBK#
RS-232 command (see Section A.6.4).
B.8.4 Input Threshold Voltage Selection
Input threshold voltage can be strapped on each channel for 5V or 12V logic thresholds. Factory shipped
default is 12V.
To change to 5V levels, withdraw the 16-channel module card, and remove the small 2-pin plug jumpers
(16 of them) on the board next to the circuitry for each channel. The locations are marked on the board. Next
mark the front panel checkbox on the module to indicate 5V logic.
B.9 EXAMPLE APPLICATION
Figure B-6 shows the MTS-1710, MTS-1720 and MTS-1730 connected to an SEL-121G distance relay for
testing all the relay inputs and outputs.
The relay contacts are powered from the MTS-1710’s DC voltage output and the MTS-1730 voltage sense
inputs are used to detect contact operation. The MTS-1730 output channels are used to apply DC voltage to
activate the relay optocoupler inputs.
This setup allows testing of all of the protection features of the relay, including the communication-aided
schemes.
The MTS-1730 channels used are as follows:
Input Channels
Output Channels
0
Trip contacts
0 Direct Trip optocoupler input
1
Close contacts
1 Permissive trip optocoupler input
2
A1 contacts
2 not used
3
A2 contacts
3 not used
4
not used
4 External trigger optocoupler input
5
Alarm contacts
5 52A optocoupler input
6
A4 contacts
6 Direct close optocoupler input
7
A3 contacts
7 Block trip optocoupler input
