Leading DeviceNet Connector
QB Expert Alpha Controller
122
Figure 5-1 DB-9 Connecter Pins (Profibus Connector)
Pin Function Pin Function Pin Function
1 Empty 4 Repeater 7 Blank
2 Empty 5 Data Ref 8 Data Line Inverse
3 Data Line 6 Power Supply 9 Empty
6.10 Leading DeviceNet Connector
Alpha controllers can have a single Micro DeviceNet™ port for connecting peripheral devices to the Alpha
Controller as a Leading controller. The assignable I/O and the embedded PLC can be programmed to run the
peripheral devices.
Pin Leading
Alpha Controllers Micro DeviceNet™
Connector
1 Drain
2 V+
3 V-
4 CAN H
5 CAN L
6.11 Input and Output Connector
All eight inputs and eight outputs are isolated 24V DC relays and contacts. The Alpha has an internal 24V DC
power supply that can be used to provide the I/O signals; an external 24V DC power supply may be used instead.
The following are amperage ratings:
Internal 24V DC supply: Maximum = 1 ampere total
External 24V DC supply: Maximum = 1 ampere per output
The Alpha controller’s Input circuits conform to the IEC 61131-2 standard for PLCs.
LIMITS per IEC 61131-2
Rated
Voltage
Type
Of
Limit
Type 2 limits
State 0 Transition State 1
V low (v) I low (ma) V trans (v) I trans (ma) V high (v) I high (ma)
24 volt
Max 5 30 11 30 30 30
Min -3 ND 5 2 11 6
The Alpha controller has a MIL-C-26482 Series I plug connector with cable clamp and solder cup pins.
NOTE: One I/O mating connector (P/N 21C104800) is included with each Alpha controller. Optional crimp style
mating connectors, crimp tools, round connector-to-terminal strip and pig-tail I/O cables are also available.
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