SPYDER® LON PROGRAMMABLE, VAV/UNITARY CONTROLLERS
63-2685—03
10
WARNING
Electrical Shock Hazard.
Can cause severe injury, death or property damage.
Disconnect power supply before beginning wiring or
making wiring connections, to prevent electrical shock
or equipment damage.
NOTES:
—
For multiple controllers operating from a single
transformer, the same side of the transformer
secondary must be connected to the same power
input terminal in each controller. Controller
configurations will not necessarily be limited to
three devices, but the total power draw, including
accessories, cannot exceed 100 VA when
powered by the same transformer (U.S. only). For
power and wiring recommendations, See “Power”
on page 7. The earth ground terminal (terminal 3)
must be connected to a verified earth ground for
each controller in the group (see Fig. 13 on
—
All loads on the controller must be powered by the
same transformer that powers the controller itself.
A controller can use separate transformers for
controller power and output power.
—
Keep the earth ground connection (terminal 3) wire
run as short as possible.
—
Do not connect the universal input COM terminals,
analog output COM terminals or the digital input/
output COM terminals to earth ground. Refer to
Fig. 18–Fig. 23 beginning on page 15 for wiring
examples.
The 24 Vac power from an energy limited Class II power
source must be provided to the controller. To conform to Class
II restrictions (U.S. only), the transformer must not be larger
than 100 VA.
Fig. 11 depicts a single controller using one transformer.
IMPORTANT
Power must be off prior to connecting to or removing
connections from the 24 Vac power (24 Vac/24 Vac
COM), earth ground (EGND), and 20 Vdc power (20
Vdc) terminals.
IMPORTANT
Use the heaviest gauge wire available, up to 14 AWG
(2.0 sq mm), with a minimum of 18 AWG (1.0 sq mm),
for all power and earth ground wiring.
Screw-type terminal blocks are designed to accept up
to one 14 AWG (2.0 sq mm) conductor or up to two 18
AWG (1.0 sq mm) conductors. More than two wires
that are 18 AWG (2.0 sq mm) can be connected with
a wire nut. Include a pigtail with this wire group and
attach the pigtail to the terminal block.
IMPORTANT
If the controller is used on
Heating and Cooling
Equipment (UL 1995, U.S. only)
and the transformer
primary power is more than 150 volts, connect
terminal 2, (the 24 Vac common [24 VAC COM]
terminal) to earth ground (see Fig. 12). For these
applications,
only one
controller can be powered by
each transformer.
NOTES:
—
Unswitched 24 Vac power wiring can be run in the
same conduit as the L
ON
W
ORKS
® cable.
—
Maintain at least a 3 in. (7.6 cm) separation
between Triac outputs and L
ON
W
ORKS
® wiring
throughout the installation.
Fig. 11. Power wiring details for one controller
per transformer.
Fig. 12. Transformer power wiring details for one
controller used in UL 1995 equipment (U.S. only).
More than one controller can be powered by a single
transformer. Fig. 13 shows power wiring details for multiple
controllers.
NOTE: Controller configurations are not necessarily limited to
three devices, but the total power draw, including
accessories, cannot exceed 100 VA when powered
by the same transformer (U.S. only). For power wiring
recommendations, see “Power” on page 7.
CONNECT POWER TO
TERMINALS 1 AND 2
EARTH
GROUND
(TERMINAL 3)
TRANSFORMER
OUTPUT
DEVICE
POWER
M23557A
Δ
P
1 2 3 4 5 6 7 8
1
0
9
2 3 4 5 6 7 8 0
9
1
1 1 1 1 1 1 1 1 2
1
1 2 3 4 5 6 7 8 0
9
2
2 2
2 2 2 2 2 2 3
3
1 2 3 4 5 6 7 8 0
9
3
3
3
3 3
3 3
3 4
COM
24 VAC
M23558A
EARTH
GROUND
(TERMINAL 3)
TRANSFORMER
OUTPUT
DEVICE
POWER
Δ
P
1 2 3 4 5 6 7 8
1
0
9
2 3 4 5 6 7 8 0
9
1
1 1 1 1 1 1 1 1 2
1
1 2 3 4 5 6 7 8 0
9
2
2 2
2 2 2 2 2 2 3
3
1 2 3 4 5 6 7 8 0
9
3
3 3
3 3
3 3
3 4
EARTH
GROUND
1
LINE VOLTAGE
GREATER
THAN 150 VAC
IF THE CONTROLLER IS USED IN UL 1995 EQUIPMENT AND THE
PRIMARY POWER IS MORE THAN 150 VOLTS, GROUND 24 VAC COM
SIDE OF TRANSFORMER SECONDARY.
1
COM
24 VAC
CONNECT POWER TO
TERMINALS 1 AND 2
