Ampcontrol VAA, User Manual

Page: 11 / 81

VOICECOM USER MANUAL ISSUE 4
-9-
NOTE : Pre-start alarms
cannot
be initiated via Modbus. The PSR1 and PSR2 inputs must be used to initiate pre
start alarms on Lines 1 and 2.
Table 1 - Connections for Digital Input/Modbus Mode
Terminal Function
DI1 to DI12
Momentarily apply +24VDC (edge triggered inputs) to play voice messages 1 to 12
respectively
PSR1 Apply +24VDC to input and hold to play pre-start alarm down line 1
PSR2 Apply +24VDC to input and hold to play pre-start alarm down line 2
0V DI 0V common for all digital inputs (from negative side of 24VDC supply)
Table 2 - Connections for Strobe Mode
Terminal Function
DI1 to DI8
Set up message address in binary where DI1 is the least significant bit. Apply and
hold +24VDC to the inputs until strobe input has been asserted.
DI9
Momentarily apply +24VDC (edge triggered input) to play the message once the
message address has been set up using inputs DI1 to 8.
DI10 to 12 Not used – no connection
PSR1 Apply +24VDC to input and hold to play pre-start alarm down line 1
PSR2 Apply +24VDC to input and hold to play pre-start alarm down line 2
0V DI 0V common for all digital inputs (from negative side of 24VDC supply)
Table 3 - Connections for Modbus Mode
Terminal Function
DI1 to DI12 Not used – no connection
PSR1 Apply +24VDC to input and hold to play pre-start alarm down line 1
PSR2 Apply +24VDC to input and hold to play pre-start alarm down line 2
0V DI 0V common for all digital inputs (from negative side of 24VDC supply)