Placid Industries PS-12 User manual

N/C LN
110
Knob
Hole
Ø.375 Ø1.13
Neutral (0 Volts)
Line 1
230
220
0
1/2 Amp
Input Fuses
1 Amp
Input Fuse
A.C. Input Connector
A.C. INPUT, 110 VOLTS -- Models PS-12 & PS-24
A.C. INPUT, 220 / 230 VOLTS -- Models PS-12-2 & PS-24-2
A. A.C. INPUT CONNECTOR - A.C. input
B. GROUND LUG
C. OUTPUT CONNECTOR - DC out, 0-10 input, % Rated Current
Potentiometer, or Follower Arm Potentiometer or Ultrasonic Sensor.
D. OUTPUT FUSE - 2 amp, 5 x 20 mm.
E. PLUG, 3 prong, for a remote Span Max. pot, (for tension adjustments
when using the Follower Arm Potentiometer or Ultrasonic Sensor.)
1. SWITCH SW1 - 12 or 24 volt output selector switch.
(Slide switch towards 12 when using a 12 volt brake or clutch.
Slide switch towards 24 when using a 24 volt brake or clutch.)
2. SWITCH SW2 - to select the method of controlling the output current:
Position (1) - Potentiometer, or
Position (2) - The 0-10 volt D.C. input signal.
3. SWITCH SW3 - to select a remote Span Max. potentiometer (for
tension adjustments when using the Follower Arm Potentiometer or
Ultrasonic Sensor.)
4. SPAN MAX. potentiometer
5. SPAN MIN. potentiometer.
% Rated Current Potentiometer.
(Also used as a remote Span Max. pot for tension
adjustments when using the Follower Arm Potentiometer
or Ultrasonic Sensor. See directions with Follower Arm
Pot. & Ultrasonic Sensor)
Unplug the top portion
of the Input Connector
to attach wires.
Line
Line 2
110 Volts AC Models:
220 Volts AC Models:
PS-12,
PS-12-2,
PS-24
PS-24-2
220 Volts
A.C. Input
(50 / 60 Hz.)
110 Volts
A.C. Input

POWER SUPPLY - PS
LOCATION OF COMPONENTS
Ø.37
MOUNTING HOLES
Use
both
nuts
Starting Serial # 07-xxx 7/13
P1/4
Placid Industries, Inc.
Phone [phone] Fax [phone]
www.placidindustries.com
4 threaded mounting studs: (on underside of sheet
metal base) 2.92" x 6.96" #6-32 threads
D
A1
B7-7/8
5.9
1.2
.43
Overall height: 3.1"
C
4 3 5
1 2
12 24
SW1
SW2
SW3
2
REMOTE
SPAN
MAX
SPAN
MIN
SPAN
MAX
E
Line 1
230
220
0
1/2 Amp
Input Fuses
Line 2
230 Volts
A.C. Input
(50 / 60 Hz.)
Unplug the top portion of the Input Connector to attach wires.
For most foreign installations: Omit the fuse on the 0 input when Line1 is grounded at the service entrance.

120 Volts A.C. input
PS-12 : 0-12 VDC output
PS-24 : 0-24 VDC output
220 Volts A.C. input
PS-12-2 : 0-12 VDC output
PS-24-2 : 0-24 VDC output
YELLOW
ORANGE
INITIAL SET UP - When Using Manual (Potentiometer) Control:
1) Determine the 100% rated current of the brake (or clutch) from the data sheet, or calculate it from the formula:
100% rated current = (rated voltage) / (coil resistance, ohms)
The rated voltage is listed on the label of the brake or clutch.
2) For safety, disconnect the A.C. power.
3) Set SWITCH SW2 to position 1, so the output current is controlled by the % Rated Current Potentiometer.
Set SWITCH SW3 towards the edge of the circuit board to select the on-board Span Max. Potentiometer.
4) Set the SPAN MAX. potentiometer fully counter-clockwise (for minimum output current).
5) Temporarily connect a (customer supplied) ammeter in series with the brake (or clutch). (See wiring diagram.)
6) Connect A.C. power.
7) Set the % RATED CURRENT potentiometer to 100% (for maximum output current).
8) SPAN MAX. - Turn the SPAN MAX. potentiometer clockwise until your ammeter displays the current level
corresponding to the 100% rated current of the brake (or clutch).
9) SPAN MIN. - Set the % RATED CURRENT potentiometer to 10%. Adjust the SPAN MIN. potentiometer until your
ammeter shows the power supply output current is at 10% of rated current.
10) Recheck Steps 7 & 8.
11) Disconnect your (customer supplied) ammeter. Reconnect the brake (or clutch) to Output Connector.
Unplug the top portion of the
Output Connector to attach wires.
AMMETER
WHITE
ADJUSTMENTS - When Using Manual
(Potentiometer) Control:
% RATED CURRENT POTENTIOMETER - The
remotely mountable potentiometer controls the
desired output current, and is adjustable from 0%
to 100%. This is used to control output torque.
SPAN MAX. - Sets the maximum output current.
The 10 turn potentiometer is mounted on the
circuit board. Use the miniature plastic
screwdriver provided to make adjustments.
SPAN MIN. - Sets the output current to zero
when the % RATED CURRENT potentiometer is
set to zero. The 10 turn potentiometer is
mounted on the circuit board. Use the miniature
plastic screwdriver provided to make adjustments.
POWER SUPPLY - PS
SPECIFICATIONS
INSTRUCTIONS - MANUAL (Potentiometer) CONTROL
Output Current: D.C., constant current type
12 volt: 1.25 amps
24 volt: 0.75 amps
Output Fuse: 2 amperes, located on circuit board.
0-10 Volt Input Resistance: 2000 ohms
% RATED CURRENT
POTENTIOMETER
BRAKE OR
CLUTCH
(for set-up
only)
P2/4
Placid Industries, Inc.
Phone [phone] Fax [phone]
www.placidindustries.com Starting Serial # 07-1 1/07
+
OUTPUT
0v 0-10v
0-10 INPUT
NC
% CURRENT POT
+
OUTPUT CONNECTOR

120 Volts A.C. input
PS-12 : 0-12 VDC output
PS-24 : 0-24 VDC output
220 Volts A.C. input
PS-12-2 : 0-12 VDC output
PS-24-2 : 0-24 VDC output
INITIAL SET UP - When Using 0-10 Volt Control:
1) Determine the 100% rated current of the brake (or clutch) from the data sheet, or calculate it from the formula:
100% rated current = (rated voltage ) / (coil resistance, ohms)
The rated voltage is listed on the label of the brake (or clutch).
2) For safety, disconnect the A.C. power.
3) Set SWITCH SW2 to position 2 so the output current is controlled by the 0-10 volt D.C. input signal.
Set SWITCH SW3 towards the edge of the circuit board to select the on-board Span Max. Potentiometer.
4) Set the SPAN MAX. potentiometer fully counter-clockwise (for minimum output current).
5) Temporarily connect a (customer supplied) ammeter in series with the brake (or clutch). (See wiring diagram.)
6) Connect A.C. power.
7) Set your 0-10 volt signal to 10 volts. (for maximum output current).
8) SPAN MAX. ADJ. - Turn the SPAN MAX. potentiometer clockwise until the output current equals the 100% rated
current of the brake (or clutch).
9) SPAN MIN. - Set your 0-10 volt signal to 1 volt. Adjust the SPAN MIN. potentiometer until your ammeter indicates
the power supply output current is 10% of rated current.
10) Recheck Steps 7 & 8.
11) Disconnect your (customer supplied) ammeter. Reconnect the brake (or clutch) to Output Connector.
ADJUSTMENTS - When Using 0-10 Volt Control:
0-10 VOLT INPUT SIGNAL - Output current is
proportional to the user's 0-10 volt input signal.
At 0 volts, output current is 0. At 10 volts, output
current is maximum.
SPAN MAX. - This potentiometer sets the
maximum output current level, when the 0-10
volt signal is 10 volts.
SPAN MIN. - This potentiometer sets the output
current to zero when the 0-10 volt signal is zero
volts.
POWER SUPPLY - PS
INSTRUCTIONS - 0-10 VOLT CONTROL
MODELS
0 - 10 VOLT
SIGNAL
P3/4
Placid Industries, Inc.
Phone [phone] Fax [phone]
www.placidindustries.com Starting Serial # 07-xxx 1/07
Unplug the top portion of the
Output Connector to attach wires.
AMMETER
BRAKE OR
CLUTCH
(for set-up
only)
OUTPUT CONNECTOR
+
OUTPUT
0v 0-10v
0-10 INPUT
NC
% CURRENT POT
+

+
D.C.
OUT
POWER SUPPLY - PS
Output Connector On Circuit Board
Brake or
Clutch
% Rated Current
Potentiometer
CW
WHITE
YELLOW
ORANGE
CW (0v 10+)
Powering Multiple Brakes or Clutches
Cycling Between 0 Amps & Any Current Level When Using Manual (Potentiometer) Control
Brakes or
Clutches
D.C. Output
from Power
Supply
DO NOT power up & power down the AC input repeatedly.
DO NOT- interrupt & connect the D.C. OUT wires repeatedly.
Correct method, when using MANUAL (Potentiometer) control:
Use a switch or relay to interrupt the yellow wire to the % Rated
Current Potentiometer (the wire to the wiper).
When the wire is connected, output current is controlled by the
% Rated Current Potentiometer.
When the relay interrupts (disconnects) the wiper, power supply
output current is zero.
Enclosed Models:
Remove case cover
for access to circuit
board & output
connector.
+
D.C.
OUT
Output Connector On Circuit Board
Brake or
Clutch
CW (0v 10+)
Cycling Between 0 Amps & Any Current Level When Using 0 - 10 volt Control
DO NOT power up & power down the AC input repeatedly.
DO NOT- interrupt & connect the D.C. OUT wires repeatedly.
Correct method, when using 0 - 10 volt control:
If the signal voltage cannot be brought to 0, use a switch or
relay to interrupt the 10 volt signal.
When the wire is connected, output current is controlled by the
0-10v signal.
When the relay interrupts (disconnects), power supply output
current is zero.
One power supply can power more than one clutch (or brake).
Total output current, 12 volt model=1.25 amps. Total output current,
24 volt model= 0.80 amps.
Note: all clutches (or brakes) will have the same voltage applied,
so output torque will be about the same.
For closely matched torque, an adjustable series resistor, of
about 15% of the clutch (or brake) coil may be used to adjust for
slight torque differences.
Connect 110 volts AC to 110 volt models, only.
Connect 220 volts AC or 230 AC to 220 volt models only. 220V Models: PS-12-2, PS-24-2, PS-12-M2, PS-24-M2
0v
0-10v
P4/4
Placid Industries, Inc.
Phone [phone] Fax [phone]
www.placidindustries.com
Switch or
Relay Contacts
Switch or
Relay Contacts