Specifications

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TRANSDUCERS
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WHEN YOU NEED IT RIGHT, RIGHT NOW, CALL KELE.
kele.com888-397-5353 USA
March 2014
Supply Voltage 24 VAC ±10%, half-wave;
or 24 VDC ±10%
Supply Current
UMX-4 210 mA @ 24 VAC;
90 mA @24 VDC maximum
UMX-8 350 mA @ 24 VAC;
150 mA @ 24 VDC maximum
Input PWM, 0-20 mA, 0-5V, 0-10V,
0-15V, jumper selectable
Input Impedance 250Ω (mA input) maximum;
46.4 kΩ minimum (VDC input)
Wiring Terminations Screw terminals
Override Transistor switch, 30 VDC @
100 mA maximum
Output
UMX-4 Four SPDT relays
UMX-8 Eight SPDT relays
Feedback
UMX-4 One output, 1-5V (3 mA) for relays
1 - 4
UMX-8 Two outputs, 1-5V (3 mA) for relays
1 - 4 and for relays 5 - 8
Relay Output Rating 5A @ 24 VAC/VDC
Operating Temperature 32° to 158°F (0° to 70°C)
Operating Humidity 5% to 95% RH (non-condensing)
Dimensions 3.3"H x 7.0"W x 1.6"D
(8.3 x 17.8 x 4.0 cm)
Weight 1.1 lb (0.5 kg)
RoHS Statement Ye s
Warranty 18 months
MULTI-FUNCTION INPUT / OUTPUT EXPANDER
UMX-4, UMX-8
DESCRIPTION
The UMX-8 is a unique microcomputer-based multifunction
interface that expands the input or output capability of building
automation controllers. It has eight SPDT output relays that
provide on/off control from a jumper-selectable PWM, current
or voltage input signal. The sequence of operation can be
easily selected by DIP switches. A dual mode allows two
UMX-8s to be controlled in sequence from a single input
signal. HOA switches allow for manual override of each relay
output. Feedback and LEDs provide status indication of the
UMX-8.The UMX-4 provides four SPDT output relays. All
jumper positions and DIP switch settings are identical to the
UMX-8. The operation of the UMX-4 is identical to relays 1-4
on the UMX-8. Feedback and LEDs provide status indication
of the UMX-4.
FEATURES
• Four or eight SPDT relay outputs
• HOA switches
• LED status indication
• Field-selectable functions
• Output status feedback
• Override indication
• Field-selectable PWM, current, or voltage inputs
• Pull-apart terminal blocks
STANDARD CONTROL SEQUENCE FUNCTIONS
Multiplexed Relay Output Expander - Provides up to 16
relay outputs expansion from one BAS output
Multiplexed Input Expander - Provides up to 16 inputs
expansion from one BAS output and one BAS input
RTU or AHU Controller - Provides multistage heating and
cooling sequences with economizer
Sequencer - Up to 16 stages of sequential control
Custom Sequences - Consult Kele for details
SPECIFICATIONS
APPLICATION
The UMX is recommended for use only with BAS controllers
programmable to issue discrete PWM, current, or voltage
signal commands. For sequential relay control from a varying
analog current or voltage signal, use a UCS sequencer
module.