STULZ Ultra-Series Humidifier Controller
6
(August,
2013)
2.5 Controller
I/O
Module
The Ultra-Series controller is equipped with a microprocessor based controller I/O module (see Figure 4). The controller I/O
module contains the software that manages the operating parameters of the humidification system.
Figure 4 - Controller I/O Module
Controller I/O Module Layout
2.5.1
The controller I/O module contains the logic and
input/output terminals. See Figure 4 for details of the I/O
module layout. The item numbers below coincide with the
call-outs in Figure 4.
1. RJ11 Telephone connector (J10) for display
2. Hatch for BMS serial interface port
3. Power on LED (1- yellow)
4. Signal LED's (3- red, yellow, and green)
5. Hatch for RS485 connector for network control bus
6. Power connector (J1)
2.6 Auxiliary
Terminals
The Ultra-Series controller is equipped with customer
interface positions on terminal blocks located in the control
box. For auxiliary device wiring connections, refer to the
electrical drawing(s) provided with the unit.
Control
Sensors
2.6.1
The controller is equipped with terminal positions for the
connection of sensors (temperature, or relative humidity).
If customer supplied, the sensor(s) may be a 4 to 20mA, a
0-1V, a 0-10V or a 0-5V signal to the system controller.
Parameters inside the controller need to be set
appropriately before connecting the sensors. Sensor(s) may
be duct mounted to monitor return or supply air and/or wall
mounted to monitor the room air to determine the
humidification demand against the control set points for
automatic control of humidity production. A wall mounted
sensor or return duct mounted sensor is typically used to
control room conditions. A duct mounted supply humidity
sensor is typically used as a high humidity limit sensor.
Alarm
Contacts
2.6.2
Dry relay contacts (N/O or N.C.), are available for remote
monitoring of alarm conditions. The alarm contacts are
rated for a resistive load at 250VAC/ 8 Amps.
2.6.2.1 Summary
Alarm
A summary alarm dry-contact is provided for remote
notification of an alarm condition. As programmed into the
system controller, an alarm condition activates the
summary alarm logic which energizes a summary alarm
relay and audible alarm if enabled.
2.6.2.2 Custom
Alarm
In addition to the summary alarm, dry contact relays may be
optionally provided for remote annunciation of customer
selected alarm condition(s). Any alarm may be programmed
in the controller to activate the user configurable custom
alarm logic.
