Toa SX-2000 Series Installation - Manual (Page 121)

121
4.4.2. SX-2100AI
[Connecting control input terminals to the TT-104B program timer]
Since the SX-2100AI's control inputs are photo coupler inputs, they need a power supply. Power can be supplied
to the photo couplers using the SX-2100AI's internal power supply or external power supply.
• When using the internal power supply, the power feed jumper and the isolation jumper are needed. Using 16P
removable terminal plugs equipped with a jumper, make connections as shown below:
TT-104B
OUTPUT CHANNEL (24 V DC 0.5 A)
BE SURE TO SET
THIS SWITCH TO “ON”
AFTER INSTALLATION
ON
MEMORY
BACK UP
CHANNEL
ASSIGNMENT
OFF
ON
OFF
CAUTION
OUTPUT CHANNEL (24 V DC 0.5 A)
Power Feed Jumper
Control input terminals
Isolation Jumper
Open voltage: Under 40 V DC
Short-circuit current: 2 mA
Cable: AWG22 – 28
twisted pair cable
16P removable terminal plug
(supplied with the SX-2100AI)
SX-2100AI
[Operation of power Feed Jumper and Isolation Jumper]
VCC
GND
- +
Power feed jumper
Photo coupler
Internal circuit
Isolation jumper
Control input