Table of Contents
Advertisement
Installation, cont'd
Cabling the control and status connector
Plug one end of the control cable(s) into this 10-pole captive
screw connector. Connect the other end of the cable(s) to a
control and/or monitoring system. The following table
identifies the signals on each pin of the connector.
Control and status connector pinout
1
2
3
4
Pin Definition
Definition
1
Up (control)
Momentary
contact closure
2
Down (control)
Momentary
contact closure
3
Stop (control)
Momentary
contact closure
4
Gnd
Gnd
5
Enable
Contact closure
6
Up (status)
Grounded/
open
7
Down (status)
Grounded/
open
Gnd
Gnd
8
Power (status)
Grounded/
9
open
Gnd
10
Gnd
Figure 2-18 shows the function of the HSA's status pins (6 [up],
7 [down], and 9 [power]). When a status condition is met, the
switch closes, shorting the status pin to ground, pulling it low.
When a status condition is not met, the switch opens, floating
the status pin. Status pins 6, 7, and 9 can sink +5 VDC to
+12 VDC, 500 mA, maximum.
2-20
HSA 822MS • Installation
5
6
7
8
9
10
Explanation
Short to ground to raise
(open) the top panel.
Short to ground to lower
(shut) the top panel.
Short to ground to stop
the top panel's motion.
Ground
Short to ground to enable
activating the motor by
pressing on the top panel.
Grounded = up
Open = down or in motion
Grounded = down
Open = up or in motion
Ground
Grounded = AC power is
applied.
Open = No power is
applied.
Ground
HSA 822MS
+
1
2
V
STATUS
PIN
CTL
BRD
S
W
1
G
N
D
Figure 2-18 — Equivalent status pin circuit
Figure 2-19 expands upon figure 2-18 to show suggested
circuitry to display the HSA's status. In this figure, the LED
lights for as long as the status pin is pulled low (the switch is
shorted [closed]).
HSA 822MS
+
1
2
V
470
STATUS
PINS
CTL
BRD
S
W
1
G
N
D
NOTE
This drawing shows a standard +5 V power supply. +12 V is another
standard power supply that can be used in this circuit. If you use a
+12 V supply, use a 2k ohm resistor in place of the 470 ohm resistor shown.
Figure 2-19 — Typical status display circuit
If connected to a position (up or down) status pin, the LED
lights when the HSA platform is in the stated position. The LED
is unlit when the platform is in motion or in the opposite
position. Under no circumstances should both position LEDs
light simultaneously.
If connected to the power status pin, the LED is lit when as
power is applied to the HSA.
Figure 2-20 shows a typical locally-constructed contact closure
control and LED indication device.
HSA 822MS • Installation
L
E
D
E
X
T
+
5
V
S
R
C
2-21
Advertisement
Table of Contents
