Ametek 90B Series - External Power Supply; VDC External Power Supply Wiring

50 Series 90B ANNUNCIATOR INSTALLATION AND CONFIGURATION MANUAL
External Power Supply
For larger systems, an external power supply can be used for 120/230 VAC or 125VDC
Input Power. In either case, the external power supply has a 24VDC output used to
connect to the Integral 24VDC Supply. The quantity of Integral 24VDC Supplies
required is shown in the chart below.
Quantity of Inputs for External Power Supplies
Annunciator Window
Size
(1) AC or DC External Power
Supply
(2) AC or DC External Power
Supplies
(2) Integral 24VDC Supplies
(3) Integral 24VDC Supplies
# of Inputs
(with Repeat
Relay option)
# of Inputs
(without Repeat
Relay option)
# of Inputs
(with Repeat
Relay option)
# of Inputs
(without Repeat
Relay option)
Full (1 per Cell)
43
52
65
78
Half (2 per Cell)
74
104
111
156
Third (3 per Cell)
98
157
147
235
Quad (4 per Cell)
104
173
156
260
Annunciator Window
Size
(2) AC or DC External Power
Supplies
(3) AC or DC External Power
Supplies
(4) Integral 24VDC Supplies
(5) Integral 24VDC Supplies
# of Inputs
(with Repeat
Relay option)
# of Inputs
(without
Repeat Relay
option)
# of Inputs
(with Repeat
Relay option)
# of Inputs
(without Repeat
Relay option)
Full (1 per Cell)
87
104
108
130
Half (2 per Cell)
149
208
186
260
Third (3 per Cell)
195
313
244
392
Quad (4 per Cell)
208
347
260
433
For Field Contact Voltage, 24VDC can be derived from the External Power Supply
24VDC Output. For 125VDC, the Integral 24VDC Supply will be used.
125VDC
External Power
Supply
120/230VAC
External Power
Supply