Carrier EnergyX 48HC Supplemental Installation Instructions page 51

To Address the I/O Flex 6126 —
The I/O Flex 6126's two rotary switches determine the I/O
Flex 6126's MAC address when it is place on the
BACnet/ARC156 or BACnet MS/TP network. The rotary
switches define the MAC address portion of the device's
BACnet address, which is composed of the network
address and the MAC address. They also set the slave
address on a Modbus or N2 network, when less than 100.
1. If the I/O Flex 6126 has been wired for power, pull
the screw terminal connector from its power terminals
labeled Gnd and Hot. The controller reads the ad-
dress each time you apply power to it.
2. Using the rotary switches, set the controller's address.
Set the Tens (10's) switch to the tens digit of the ad-
dress, and set the Ones (1's) switch to the ones digit.
EXAMPLE: If the controller's address is 25, point
the arrow on the Tens (10's) switch to 2 and the arrow
on the Ones (1's) switch to 5. See the figure below
10's
1's
NOTE: The I/O Flex 6126 recognizes its address
only after power has been cycled.
Wiring Inputs and Outputs
Input Wiring Specifications
Input Maximum Length
0--- 5 Vdc 1000 feet (305 meters)
0--- 20 mA 3000 feet (914 meters)
Thermistor 1000 feet (305 meters)
Dry Contact
Pulse Counter
TLO
RTD 100 feet (30 meters)
RS Sensor 500 feet (152 meters)
Inputs
The I/O Flex 6126 has 12 inputs that accept the signal types described below.
These Support this
Inputs... signal type...
All Thermistor
RTD
0--- 20 mA
0--- 10 Vdc
All Dry Contact
UI--- 1, UI--- 2 Pulse Input
0
0
C12790
Minimum Gauge
26 AWG
26 AWG
22 AWG
22 AWG
19 AWG, 4 conductor if a BACview is connected to the Rnet
22 AWG, 4 conductor if only RS room sensors are connected
Description
Precon type 2 (10 kOhm at 77F). Input voltages should be from 0.489 Vdc to 3.825 Vdc for thermistors.
The input impedance of the I/O Flex 6126 is approximately 1 Mohm.
A 5 Vdc wetting voltage detects contact position, resulting in a 0.5 mA maximum sense current when
the contacts are closed.
Maximum of 10 pulses per second. Minimum pulse width required for each pulse:
• ON to OFF time (half cycle) is 50 msec
• ON to OFF to ON time (full cycle) is 100 msec
To Wire for Power —
CAUTION
!
EQUIPMENT PERFORMANCE HAZARD
Failure to follow this caution may cause equipment to
not work properly.
S The I/O Flex 6126 has an operating range of 21.6
Vac to 26.4 Vac. If voltage measured at the I/O Flex
6126's input terminals is outside of this range, the
I/O Flex 6126 may not work properly.
S Do not power pilot relays from the same
transformer that powers the I/O Flex 6126.
1. Turn off the I/O Flex 6126's power to prevent it from
powering up before you can verify the correct voltage.
2. Remove power from the 24 Vac transformer
3. Pull the screw terminal connector from the
controller's power terminals labeled Gnd and 24 Vac.
4. Connect the transformer wires to the screw terminal
connector.
5. Apply power to the transformer.
6. Measure the voltage at the I/O Flex 6126's power in-
put terminals to verify that the voltage is within the
operating range of 21.6 - - 26.4 Vac.
7. Insert the screw terminal connector into the I/O Flex
6126's power terminals.
8. Turn on the I/O Flex 6126's power.
9. Verify that the Power LED is on and the Run LED is
blinking.
51
Shielding
Shielded
Shielded or Unshielded
Shielded
Shielded
Shielded or Unshielded