Automation Components, Inc.
2305 Pleasant View Road | Middleton, WI 53562
Phone:
1-888-967-5224 |
Website:
workaci.com
Page 2
Version 4.0
I0000824
WIRING INSTRUCTIONS
(Continued)
1) Supply Voltage
- The input voltage to the A/PS24 should come from an isolated 24 VAC
transformer or a 30 to 36 VDC power supply. Connect this to the + 24 VAC – Terminal blocks.
Note: A grounded DC (-) terminal and a grounded 24 VAC Input transformer will blow the unit’s fuse
in the Full-Wave mode. Also, in half-wave mode, the 24 VAC connections are POLARITY SENSITIVE.
Be sure to insure that all 24 VAC minus (-) terminals are connected to the the same lead on the 24
VAC transformer.
Without any load attached, the PS24 uses 1.5 VA
when powered. Be sure to size the 120 VAC to 24
VAC transformer to handle the power (VA)
required by both the PS24 and the load
connected to the PS24. The PS24 is 65% efficient
with a 24 VDC output voltage setting.
Derate the transformer VA to x%. Determine
output power required from the equation
(voltage output x current draw from load) = VA
load. Example: (24 VDC * 0.2A) = 4.8 VA load.
Determine transformer power from the equation
(output VA / efficiency) = VA transformer (or
similar). Example: (4.8 VA / 0.65) = 7.4 VA
transformer.
2) Output Connections
– Connect your load to –
VDC + Terminal Blocks. Be mindful of polarity.
OUTPUT SELECTION JUMPERS
HALF WAVE - FULL WAVE RECTIFICATION
• The A/PS24 comes with the option of selecting
either a Full-Wave or Half-Wave output
depending on your application needs.
All power
supplies are shipped from the factory in
Half-Wave mode.
• Make sure there is no power applied to the unit when changing jumpers. Failure to do so may
harm the unit or cause damage to any other device connected to the power supply.
HALF-WAVE VERSUS FULL-WAVE INDENTIFICATION
• If a device is half-wave, the signal common will typically be connected to the AC minus (-)
terminal on the device. Therefore, with no power applied, take an ohmic measure between
signal common and AC (-) using a DMM; the reading should measure less than two (2) ohms.
• If a device is full-wave, the signal common and the AC (-) will read overload or open when
measured with a DMM.
HALF-WAVE JUMPER SETTING
FULL-WAVE JUMPER SETTING
FULL
FULL
HALF
HALF
J1
J1
