Airmax MaxAir 100 LV, Инструкция по установке и обслуживанию

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Page 18
DCC7235 LAYOUT
FIG 1
FIG 1
1. POWER:
24VAC (nominal) supplied by a Class II transformer between terminals "R" (“24VAC LINE”) and "C"
(“24VAC RET”). The
RED “POWER”
LED illuminates when the control is powered.
Transformer rating: 20VA minimum
Voltage: 22.5Vac Minimum, 30Vac Maximum
Current: <100ma (All outputs and relays active)
NOTE: SUPPLY 24VAC POWER FROM THE SECONDARY OF AN NEC CLASS-2
TRANSFORMER ONLY.
2. CONTROL SYSTEM INPUTS
a.) 0-10vdc Command
— When SW3-1 “TEST” is
ON, a 0-10 VDC input to J2 between Vin+ and
Vin
– produces a variable PWM output of 0% through 100%.
The polarity of the input signal
must be observed . See Figs 1 & 2:
Differential Input Voltage: 0 V to 10 VDC represents 0 to 100% PWM
Maximum Input V dc: +10.2 Vdc
Common Mode Voltage: - 0.2 V max negative, +5 V max positive
Signal (differential) Input impedance: >150K Ohm (Vin+ to Vin-)
Common mode impedance: > 150K Ohm to COM