Airmax MaxAir 100e P2, Инструкции по проектированию, установке и обслуживанию

Страница: 22 / 68

Page 22
b.1.) INPUTS SPECIFICATIONS
Input Impedance:
Y1 and Y2
~1K Ohm between: each terminal to C (24VAC Return).
Minimum acceptable cooling anticipator resistance: 3.3K Ohms between 24Vac(R) to
Y1 or Y2
All other inputs:
>10K Ohm between each terminal and C (24VAC return).
Load Current FORM FACTOR — All Inputs: Positive Half-Wave (with respect to C
(24VAC RTN)
MIN AND MAX INPUT VOLTAGE – All 24VAC Inputs:
Signals ACTIVE : 20VAC minimum. 30VAC Maximum; Current: <15ma @30VAC.
Signals INACTIVE : <4VAC (Current from any signal source, switch, and/or external
snubbers must hold inputs to <4VAC or DC)
NOTE: DO NOT CONNECT THE SWITCHED 24VAC INPUTS FROM A 2
nd
, SEPARATE
TRANSFOMER THAN THE 24VAC SOURCE SUPPLYING POWER TO THIS CONTROL
UNLESS
THE TRANSFORMER SUPPLYING THIS CONTROL AND THE 2
ND
TRANSFORMER ARE PHASED PROPERLY WITH THEIR COMMONS CONNECTED.
4.
OUTPUTS
A. CONNECTIONS TO EC MOTOR (ECM): J3 PIN-OUTS (SEE FIG 3):
J5–pin-1: START/STOP : When the Blower motor is commanded to operate this signal
enables motor operation. (Use is optional. Use if the system requires a separate
enable.)
0VDC = not enabled, 22VDC (nom) = enabled
10ma maximum sourced current.
J5–pin-2: COMMON – J5 Outputs Common (to isolated common input(s) on
motor/drive). DO NOT CONNECT COMMON TO 24VAC RET
J5–pin-3 : PWM Motor Command : 0% to 100% duty-cycle.
OFF: 0VDC (min). ON: 22VDC (peak). 10ma max sourced current.
When measured on a DC voltmeter, the signal level varies from 0VDC to
~22VDC max as the percent PWM duty cycle increases from 0 to 100%.
The
Green LED “ BLWR CMND ” illuminates when the PWM command is active.
Brightness increases with PWM duty cycle.
J5–pin-4: NO CONNECTION
B. HIGH VOLTAGE RELAY OUTPUTS:
a. A1, A2, A3 (PUMP) Relay (Formerly “WV RELAY”)
Contacts A1 (NO), A2 (NC) to A3 (Pole): A3 is “Dry” and can be connected to an
external voltage source for switching to A1, A2.
The WV Relay is energized under the following conditions:
1) SWITCH “PUMP TMR ON” POSITION, AND
2) Upon detecting a call for W1 or W2 (no delay) OR
3) If W1 or W2 was not active for 6 (or 24) consecutive powered hours.
The green “W_TIMER” LED illuminates when the PUMP relay is activated.
b. ACCESSORY Relay (ACC, ACCp):
Contact ACC (NO) connects to pole ACCp. These are DRY Contacts and can be
connected to an external voltage source.
The Accessory relay is energized with
"G" . i.e. Any call from the thermostat that
includes an active "G" signal energizes this relay.
c. MAXIMUM CONTACT RATINGS: