TTX Series DC Actuator Installation & Maintenance Instructions |
17
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voltages are possible in some cases. Digital I/O and brake
circuits as a group are optically isolated from main power
circuits to provide some fault isolation and enhance immunity
from transients and electromagnetic interference.
All standard models have a 19 pin M23 connector for I/O and
I/O power connections are positive to pin 6 and 0 V return to
pin 19. Though the connection at pin 19 ultimately goes to the
negative terminal of the external power supply, it is required to
be ground referenced so is described as 0 V or “I/O Common”
and labelled “IOCom” internally. All digital inputs are powered
externally but have a single return through I/O Common. The
connection at pin 6 is described as “IO +24 V” and labelled
“IO+V” internally. If the brake option is present, the voltage
must be 24 V ±10%. If no brake is present, the voltage applied
at I/O +24 V may vary considerably as long as the loads
connected to digital outputs are compatible with the I/O power
supply voltage. 24 V I/O systems are most common, but
12 V systems are supported. If no brake is present and no
digital outputs are used, no connection to IO +24 V is required
at all.
The Tritex TTX080 model has a cover that may be removed to
access the Termination Board with push-button release spring
terminals for connections. Connections could be modified if
needed, or the I/O connector could be removed entirely for
direct wiring using other wiring methods through the M20
threaded port. For the Tritex TTX060 the IO must be accessed
through the M23 19 pin connector because the termination
board is not available on the Tritex TTX060. Details of alternate
wiring are not addressed in this manual at this time as they
would be engineered by the user for a specific application. The
same Termination Board is used on both AC and DC models
and with no internal power supply, the “Src+24” terminals are
not used on DC models. A factory installed jumper will tie the
two “Src+24” terminals to prevent accidental connections to
these terminals. On models with brakes, there is also a jumper
from one “IO+V” terminal to the “Brk+V” terminal to power the
brake from the I/O Power Supply.
I/O Power Supply Wiring and Fusing
Volts
Amps
Fuse
Wire
24 Vdc ±10%. 1
2 A, if power supply
is not limited at 3 A
or less
18 AWG
(0.8mm
2
)
Fuse
AC Input
2A
IO +V
IO Com
24 DC
Regulated
Actuator Connection
+
-
Figure 13
–
Wiring for External I/O Power Supply
CAUTION!
Make sure 24 Vdc power supplies are
connected in the correct polarity. Some reversed connections
will cause damage to the circuits. The I/O Common terminal
must be connected to the negative and grounded side of the
power supply. An external supply should not be connected
directly to the +24 V Source terminals.
4.6.1 I/O Connector Wiring
Standard M23 19 pin Connector Pin Assignment and Wire Color
Code
FUNCTION
Connector
Pins
Wire Color Code for Internal Wiring &
TTIOC Cable
Digital Input 1
1
White/Yellow
Digital Input 2
2
White/Red
Digital Input 3
3
White/Green
Digital Input 4
4
White/Black
*Digital Input 5
5
Red/Black
IO +24 V
6
Red
*Digital Input 6
7
Red/Green
*Digital Input 7
8
Red/Yellow
*Digital Input 8
9
Beige
*ANALOG IN+
10
Green
*ANALOG IN-
11
White
Shields
12
Gray (internal wire) or Clear (cable)
*Analog Out +
13
Blue
*Analog Ref
14
Orange
*Digital Output 4
15
White/Brown
Digital Output 3
16
White/Orange
Digital Output 2
17
White/Blue
Digital Output 1
18
Light Red (Pink)
IO Common
19
Black
* For the 4-20 mA (-IA4) option:
Inputs 5, 6, 7 & 8 and Output 4 are not available.
The analog voltage input and output are replaced with 4-20 mA
input and output respectively.
