Table 5: I/O terminal blocks, functions, ratings, requirements, and cables
Terminal Block label
Terminal
label
Function, ratings, requirements
Determine wire size and
maximum cable length
Binary Input - Dry Contact Maintained Mode
0.01 second minimum pulse width
Internal 18 V. 3k ohm pull up
IN
n
Binary Input - Pulse Counter/Accumulator Mode
0.01 second minimum pulse width
(50 Hz at 50% duty cycle)
Internal 18 V. 3k ohm pull up
BINARY
(Inputs)
ICOM
n
Binary Input Common
for all Binary Input (IN) terminals
Note:
All Binary ICOM
n
terminals share a common,
which is isolated from all other commons, except the
Configurable Output (CO) common (OCOM
n
) when the
CO is defined as an Analog Output.
See Guideline
A
Analog Output - Voltage Mode (0–10 VDC)
10 VDC maximum output voltage
10 mA maximum output current
Required an external load of 1,000 ohm or more.
See Guideline
A
OUT
n
Binary Output - 24 VAC Triac
(External Power Source only)
Connects OUT
n
to OCOM
n
when activated.
External Power Source Requirements:
30 VAC maximum output voltage
0.5 A maximum output current
1.3 A at 25% duty cycle
Maximum 6 cycles/hour with M9220BGx-3
40 mA minimum load current
See Guideline
C
in Table 6.
CONFIGURABLE
(Outputs)
OCOM
n
Analog Output Signal Common
All Configurable Outputs
(COs) defined as Analog Outputs (AOs) share a common,
which is isolated from all other commons except the Binary
Input common.
Binary Output Signal Common
All Configurable Outputs
(COs) defined as Binary Outputs are isolated from all other
commons, including other CO commons.
Same as (Configurable)
OUT
n
.
Analog Output - Voltage Mode (0–10 VDC)
10 VDC maximum output voltage
10 mA maximum output current
Required an external load of 1,000 ohm or more.
Note:
The Analog Output (AO) operates in the Voltage
Mode when connected to devices with impedances
greater than 1,000 ohm. Devices that drop below 1,000
ohm may not operate as intended for Voltage Mode
applications.
OUT
n
Analog Output - Current Mode (4–20 mA)
Requires and external load between 0 and 300 ohm.
Note:
The Analog Output (AO) operates in the Current
Mode when connected to devices with impedances less
than 300 ohm. Devices with impedances greater than
300 may not operate as intended for Current Mode
applications.
ANALOG
(Outputs)
OCOM
n
Analog Output Signal Common
for all Analog OUT terminals.
Note:
All Analog Output Common terminals (OCOM
n
)
share a common, which is isolated from all other
commons.
See Guideline
C
in Table 6.
M4-CGM General Purpose Application Controllers Installation Guide
8
