Specifications

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kele.com 888-397-5353 USA
March 2014
ORDERING INFORMATION
MODEL DESCRIPTION
UMX-4 Four stage multifunction expander with HOA switches
UMX-8 Eight-stage multifunction expander with HOA switches
8 7 6 5 4 3 2 1
UMX-8
8 7 6 5 4 3 2 1
POWER
PWM
OVERRIDE
AUTO
OFF
HAND
FBK2
FBK1
24V PWR
COM
PWM
PWM
ANA
OVERRIDE
8
7
6
5
4
3
2
1
24V
R
LED Indication:
Power (green): On when power is present
PWM (yellow): On when PWM signal is present
Override (red): On when any override switch is
out of the Auto position
Any outputs driving an external relay or an inductive load
should have a varistor installed at the relay as shown.
Note:
V39ZA1 Varistor
LED Indication:
Relay LEDs (red):
on when relay is
energized in AUTO
or HAND position
Input jumpers shown
jumpered for 0-10V input
Note: If driving a DC relay, a reverse connection diode is
recommended across the relay coil (such as 1N4004).
Override Output, Transistor Switch 30 VDC @ 100 mA max
switch closes to common when any override switch is
out of the Auto position.
Current or Voltage Signal (if used)
PWM BAS Controller Contacts (if PWM is used)
PWM terminals are optoisolated and polarity insensitive.
Contacts may be wired in series to either PWM terminal.
Any 24V source can be used to power the PWM signal.
24 VAC/VDC Power Supply
Feedback Status (1-5 VDC) for Relays 1-4
Feedback Status (1-5 VDC) for Relays 5-8
PW
AN
15V
10V
5V
MA
Override Switches: Apply 24V to the
UMX for the override switches to
function in the HAND position.
The UMX-8 has two feedback voltage output circuits labeled FBK1 (relay outputs 1-4) and FBK2 (relay outputs 5-8). The UMX-4 has one
feedback voltage output circuit labeled FBK1 (releay outputs 1-4). When a relay output is energized, the following voltage is added to the
feedback output:
FBK1 - Feedback Circuit #1 FBK2 - Feedback Circuit #2
Relays 1,2,3,4 Off 1.0V Relays 5,6,7,8 Off 1.0V
Relay 1 On Add 0.27V Relay 5 On Add 0.27V
Relay 2 On Add 0.53V Relay 6 On Add 0.53V
Relay 3 On Add 1.07V Relay 7 On Add 1.07V
Relay 4 On Add 2.13V Relay 8 On Add 2.13V
Example: If outputs 1 and 3 are energized and 2 and 4 are de-energized, the voltage output on FBK1 will be 2.34V
(1V + 0.27V +1.07V = 2.34V). The same would be true for FBK2 if relay outputs 5 and 7 were energized,
and 6 and 8 were de-energized.
FEEDBACK
WIRING
MULTI-FUNCTION INPUT / OUTPUT EXPANDER
UMX-4, UMX-8