Rockwell Automation 1608P-200A480V... HC-DySC User Manual - Manual (Page 43)

Rockwell Automation Publication 1608P-UM005A-EN-P - November 2014 43
HC-DySC with Generator Transfer (GT) Option Appendix A
Typical TB2 connections for a hardwired generator transfer command contact
signal are shown in
Figure 33 . The signal is connected between positions 1 and 2.
Position 1 provides 24VDC to a (normally closed) auxiliary contact on the ATS
or generator circuit, which is fed back to terminal 2. Open the external contact to
put the HC-DySC in GT mode. An internal contact between Positions 3 and 4
closes whenever the HC-DySC is in the GT mode. This is a remote indicator
that the HC-DySC is in GT Mode. This contact is rated for 2A and 24V. Note:
if the HC-DySC 24V supply is used to power a remote indication device the
device must not exceed 15 W. To place the HC-DySC permanently in GT mode:
open the connection between TB2 positions 1 and 2.
Position 5 provides the 24V return, which is internally connected to chassis
ground. If an optional READY indicator is installed, connect all 24V returns
together when multiple HC-DySC units are installed, as shown in
Figure 34 .
ATTENTION: TB2 Recommended torque is 8 lb.-in. (0.9 N-m). Acceptable wire sizes are 22...8
AWG.
Figure 33 - Typical TB2 ATS / Generator Communication Connections
Figure 34 - Typical TB2 ATS/Generator Communication Connections (Multiple HC-DySC Units)
USER
PROVIDED
K
Located at ATS +
Optional
+24VDC
GT Command
Ready
Indicator
GT Ready
TEST
Optional
Note: Contact K must open at least 1s before
ATS transfers to emergency power
HC-DySC
+24VDC
GT Command
24VDC Return
Closes in
GT Mode
EARTH GROUND
TB2
1
6
5
4
3
2
USER
PROVIDED
K
Located at ATS +
Optional
+24VDC
Ready
Indicator
GT Ready
TEST
GT Ready
Chain
Chain
24VDC Return
GT Command
HC-DySC 1
+24VDC
GT Command
24VDC Return
Closes in
GT Mode
EARTH GROUND
TB2
1
6
5
4
3
2
HC-DySC 2
+24VDC
GT Command
24VDC Return
Closes in
GT Mode
EARTH GROUND
TB2
1
6
5
4
3
2
Note: Contact K must open at least 1s before
ATS transfers to emergency power