Field Wiring - Carrier 040-420 Installation And Service Manual

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r
S W I T C H
I
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LEGEND
C O M M - Communications Bus UR
Fig. 25 - Accessory Unloader Control Wiring, 130 (50 Hz), 150~210,225,250, 280
! - - - - - -
STAGE 1
L v--w _--B-B 0
STAGE2 1
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NOTE: Contacts must be rated for dry circuit application, capable of
reliably switching a 5 vdc, 1 mA to 20 mA load
Fig. 26A - Demand Limit - Two External Switch
Inputs, 30GN040-210 and Associated Modular Units
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w - - - m - - - -
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- - - - - - - - -
- - - - - I I -
L - B - - - - -
211
-
- - - - - - - - - - - - - - - A - - -
- - - - - - - - m - w - - - - - - -
4-20 HA OUTPUT
- - - - - I - - - - - - - - - - - - - - - - Y - -

FIELD WIRING

Refer to Fig, 26 - 36 for field wiring.
4 IN/4 O U T
M O D U L E
i t - - - - 1
- - - -
- -
u
- - - -
- - - ' I
- -
STAGE 1
L - - - - - - - - - - - -cl 5
e m - - - H - - - - -cl I
r
STAGE2 1
N O T E S :
1 Requires accessory options module package.
2 Contacts must be rated for dry circuit application, capable of re-
liably switching a 5 vdc,
Fig. 26B - Demand Limit - Two External Switch
Inputs, 30GT225, 250, 280 Units
71
I '
I '
l ' '
I '
I '
I '
I ' I I
I ' '
l '
I '
I '
I 1
I ' ;
- -
I
2
1
T B 7
T B 7
T B 7
T B 7