[1] 24V supply voltage, green
[2] 15V control voltage, green
[11] Conditioned command signal
[13] Solenoid current
[12] Common ground
Monitor points Y
[3] Solenoid output enabled, yellow
[4] Solenoid output overload, red
[5] Current output to solenoid, yellow
[6] Set minimum
[9] Ramp setting
LEDs
Potentiometers
[7] Gain
t
t
t
24V 15V
max.
YØ 2 (0.0787 dia.) sockets
Front Panel
C.1
Type EEA-PAM-513-A; 14 Design
For KCG-3, 10 Series Proportional Pressure Control Valves
General Description
The power amplifier has five voltage
inputs (one inverting) and a current input
for 0-20 mA. The “set minimum” and
“gain” adjustments allow the amplifier to
be easily tuned to the proportional
pressure control valve. The ramp
potentiometer on the front panel
simultaneously adjusts the output
acceleration and deceleration. The ramp
function is normally enabled; it can be
permanently disabled by an external
wire link, or selectively enabled/disabled
using a remotely located switch.
Monitor points on the front panel allow
measurement of the conditioned
command input signal (after set
minimum, gain and ramp functions) and
of the solenoid current. The latter is
scaled to give 1 volt per ampere.
Features
FUser-friendly front panel with all the
necessary adjustments, LEDs and
monitor points
FElectronic overload protection with
automatic reset
FPulse width modulation for high
efficiency
FRamp function generator for control of
pressure increase and decrease rates
F24V DC power supply
FEither current or voltage input signals
FStandard input and output signals
New 14-design Features
FWider supply voltage range plus
increased tolerance to ripple
FLow supply voltage protection
FAdditional monitor points on edge
connector
Gain re-positioned in circuitry to give:
FRamp setting unaffected by gain
adjustment
FConstant trigger voltage for deadband
compensation
Warning: Electromagnetic Compatibility (EMC)
The European Community directives for electromagnetic comptibility (EMC) do not apply to this product
GB-2137C
Vickers®
Valves
Power Amplifier
C.2
Operating Data
Power requirements 24V DC nominal x 40W
Maximum voltage range:
20 - 34V (including ripple)
<4V. pk.-to-pk. ripple
Reverse polarity proitected
Amplifier shuts down below 19V
Output voltages for control z22
z2 and b2 +15V x 50 mA; ripple <50 mV pk-to-pk
"10V ("1%) x 5 mA
Command signal inputs
Voltage inputs:
Direct-voltage pins b8, b6, z8, b10
Inverting-voltage pin z10
Voltage range
Input impedance
Current input:
Current pin z6
Current range
Input impedance
0 to 10V
47 kΩ
0 to 20 mA
100Ω
Power drive, pulse-width modulated
(PWM):
Maximum solenoid current 1,8A, short-circuit protected
Dither Factory-set
Set minimum pressure control:
Factory setting
Adjustment Zero solenoid current
0 to 1,0A solenoid current
Gain control:
Factory setting
Adjustment Max. pressure at 10V command signal
0,06 A/V to 0,18 A/V
Ramp time adjustment:
Factory setting
One adjustment for increasing and
decreasing pressure
Minimum (20 ms approx.)
20 ms to 2s with “set minimum” at zero
Overload detection, factory set Automatic reset when fault removed
Drive enable/disable: z24
Enable (power available to solenoid)
Disable (no power to solenoid) +10V to +30V (>6 kΩ)
Open circuit or up to 0,8V to z24
Ramps enable/disable: b12, b20
Enable (valve switching rate limited by
ramp potentiometer)
Disable (fastest valve switching; ramp
circuit bypassed)
Open circuit between b20 and b12
Connect b20 to b12
Command signal monitor points:
fr ont panel and b18
Output impedance
0 to 10V full scale. Command signal
conditioned by “set minimum”, gain and
ramp function settings.
10 kΩ; short-circuit protected
Solenoid current monitor points:
fr ont panel and z18
Output impedance 1 V/A solenoid current
10 kΩ; short-circuit protected
Drive output status indicator: z12
Drive enabled
Drive disabled >+6V
<–6V
Continued on next page
Solenoid Connections
b26 (or b28)
b28 (or b26)
No
connection
Note: Connections not polarity sensitive.
Circuit and Connections
Note: Connect all shields/screens at card end only.
z8
b10
b2
z2
zbd30
zbd32
b8
b6
z10
z6
z4
b4
b28
b26
z24
z12
24V
Dither
Overload
low voltage
Output
enabled
Power zero
24V DC
power
supply
To solenoid
+10V
–10V
15V
PWM
Gain
Power stage
Output
+15V
z22
b12b20 b18 z18
+24V
Ramp
Control
zero
Ramp
enable
Current sensing
Current command
Voltage
commands
Inv. voltage
47kW100W
Output enable Close to enable
output
Output solenoid
current monitor point
on front panel
Command signal
monitor point
(conditioned) on
front panel
Link to
disable
ramp
5 mA
5 mA
50 mA
Set
minimum
Monitor drive output
+
+
Customer’s protective
ground connection
C.3
Ambient temperature range 0 to 50_C (32 to 122_F)
Edge connectors DIN 41612 F48 male type on the board.
Mating connector can be F32 or F48
female type.
Mass 200g (0.44 lb)
Installation recommendations leaflet for
electronic amplifiers ML-9046
Supporting products:
Power unit
Portable test equipment
Cardholder (F32)
Edge connector (F48)
EHA-PSU-704-A/B-10
EHA-TEQ-700-A-20
Part no. 02-104807
Part no. 508178
3rd angle
projection
Plug-in Unit of 3U Height, to IEC 297
14
(0.55)
14,2 (0.56)
7,2
(0.28)
8 (0.31)
2,5
(0.1)
Components
envelope
z - pin row
b - pin row
d - pin row
(Only rows z and b are used)
7,92
(0.31)
7,45
(0.29)
3
(0.12)
3
(0.12)
Model
designation
M2,5 x 11 (0.43) long collar
screws supplied with panel for fixing
DIN 41612 F48 male connector.
See “Edge connectors” in
“Operating Data” table
Installation Dimensions in mm (inches)
100
(3.94)
175,24 (6.90)
128,4
(5.06)
40,3
(1.59)
122,4
(4.82)
C.4
