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5. If voltage output is required, proceed to step 6. Current
output calibration is complete.
6. Set desired maximum voltage output with the VOLT
ADJ potentiometer.
NOTE: The device calibrates the minimum voltage
automatically according to the ratio of mA
output extremes.
Multiplexing (Q7002C Only)
Multiplex control enables a single BAS control signal to
control up to eight Q7002C Interface Modules. Wire the
devices according to Fig. 8 or Fig. 9.
IMPORTANT
Before using a Q7002C with multiplex control, turn
on dip switch two.
1-5 Vdc
{
{
4-20 mA
L2
L1
(HOT)
1
3
BAS CONTROL
PWM CONTACT
{
1-5 Vdc
4-20 mA
{
{
1-5 Vdc
4-20 mA
{
{
1-5 Vdc
4-20 mA
{
1
THE POWER SUPPLY CAN BE 24 VAC (AS SHOWN) OR 24 VDC.
A MAXIMUM OF EIGHT Q7002C INTERFACE MODULES
2
CAN BE MULTIPLEXED FROM ONE BAS CONTROLLER.
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION
3
AS REQUIRED.
Fig. 8. Q7002C multiplex wiring with
a common transformer.
1
VOLTS OUT
MA OUT
COM
24V PWR
SIG IN +
SIG IN -
Q7002C
2
VOLTS OUT
MA OUT
COM
24V PWR
SIG IN +
SIG IN -
Q7002C
3
VOLTS OUT
MA OUT
COM
24V PWR
SIG IN +
SIG IN -
Q7002C
2
8
VOLTS OUT
MA OUT
COM
2
24V PWR
SIG IN +
SIG IN -
Q7002C
M13285
Q7002A,B,C INTERFACE MODULES
1-5 Vdc
4-20 mA
L2
L1
(HOT)
1
3
L2
L1
(HOT)
1
3
1-5 Vdc
4-20 mA
BAS CONTROL
PWM CONTACT
1-5 Vdc
4-20 mA
1-5 Vdc
4-20 mA
1
THE POWER SUPPLY CAN BE 24 VAC (AS SHOWN) OR 24 VDC.
A MAXIMUM OF EIGHT Q7002C INTERFACE MODULES
2
CAN BE MULTIPLEXED FROM ONE BAS CONTROLLER.
PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION
3
AS REQUIRED.
Fig. 9. Q7002C multiplex wiring with separate
transformers.
All devices receive all pulse signals; however, only those
devices set with a corresponding address react to the control
portion of the signal. Each signal the BAS controller sends
must include the following three pulses:
1. Attention.
2. Address.
3. Control.
Attention Pulse
The attention pulse initializes the interface modules, alerting
them that a control pulse can follow. The attention pulse is
one second longer than the existing time base.
7
{
VOLTS OUT
{
MA OUT
COM
24V PWR
SIG IN +
SIG IN -
Q7002C
{
VOLTS OUT
{
MA OUT
COM
24V PWR
SIG IN +
SIG IN -
Q7002C
{
VOLTS OUT
{
MA OUT
COM
24V PWR
SIG IN +
SIG IN -
Q7002C
2
{
VOLTS OUT
{
MA OUT
COM
24V PWR
SIG IN +
SIG IN -
Q7002C
M13286
1
2
3
8
63-2551
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