|
MM1400
RTD INPUT
SINGLE LIMIT ALARM
FEATURES
 | Provides a DPDT Relay Contact Closure at a Preset RTD Input |
| 3-Wire or 2-Wire, 10 ohms to 2000 ohms RTDs |
| Standard Fail-safe Operation |
| Red and Green LED Alarm Status Indicators |
| Adjustable Deadband |
| Latching Alarm Available (MM1410) |
| Unlimited* Choice of Input Ranges |
| Upscale Burnout Protection |
| Choice of Power Options |
| 10 + 5 Year Warranty |
DESCRIPTION
The MM1400 monitors an RTD input signal and trips a dpdt, 5 A relay when the
input exceeds the desired level. Normal operation has the relay energized for
the non-alarm condition and de-energized for an alarm condition. This provides a
fail-safe alarm condition for loss of power to the module. The alarm has a
set of red/green LEDs to indicate alarm status.
A deadband adjustment allows a deadband of 0.5% to 100% of span to be set into
the module. The deadband is symmetrical about the setpoint.
With the latching option, the alarm has no deadband control. Once the limit has
been reached, the alarm latches and power must be momentarily interrupted to
reset the alarm.
The module includes filtering and conditioning to reduce susceptibility to
transients and noisy operations.
TYPICAL APPLICATIONS
Temperature control, monitoring or warning for HVAC, pumps, motors, etc.
MOUNTING
The module is designed to plug into a standard 20-pin relay socket (part number
MP020). Option E uses an 11-pin socket (part number MP011). The sockets are
molded plastic suitable for mounting on a flat surface. The MP011 will mount in
a 2 3/4 inch wide PVC snap track (TRK48). Use CLP-1 hold-down clip with MM14X0
Option E (11-pin). No clip is available for 20-pin modules. Killark
HK Series explosion-proof housings are available with 11-pin sockets. (They
cannot be provided with 20-pin sockets.) Order HKB-HK2D-11 (standard dome) for
use with MM14X0 Option E. An 11-pin DIN rail mounted socket (P/N DMP011)
is available for 35mm symmetrical rail.
SPECIFICATIONS
RTD INPUT
3-wire or
2-wire,
10 ohms to 2000
ohms
INPUT RANGE
select any range within RTD limit
min span
25°F/14°C
(100°F/55°C with 10 ohms RTD)
Excitation Current
10 ohms
100 ohms
1000 ohms
2000 ohms
|
10 mA
5 mA
0.5 mA
0.2 mA
|
SETPOINT
0 to 100% of span
DEADBAND
0.5% to 100% of span
RESPONSE TIME
20 ms
typical
(range
dependent)
ACCURACY
±0.01% of
span
COMMON MODE REJECTION
120 dB, DC to 60
Hz
OPERATING
TEMPERATURE
14°F to 140°F
-10°C to 60°C
TEMPERATURE STABILITY
±(0.02% of span + 30 µV)/°C max
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RELAY
CONTACTS
1 (dpdt)
Resistive Load:
5 A max, 150 W max
220 VAC max, 30 VDC max
Inductive Load
(Power factor > = 0.4):
2.5 A max, 75 W max
220 VAC max, 30 VDC max
TRANSISTOR OUTPUT (Option V)
Relay driver
(12 V coil, > = 220 ohms)
or open-collector outputs
sink 100 mA, 30 V supply max
LINEARITY (Option
T)
±0.01% of
span
POWER
115 VAC 10%, 50/60 Hz
(2.5 W max)
230 VAC 10%, 50/60 Hz
(2.5 W max)
DC Power
Option
24
VDC (limits 21-32 VDC)
Isolation, DC power supply to
input common
10 megohms
* Within specified range limits
|
CONNECTIONS
Power, AC L1 or DC
+
Power, AC L2 or DC
-
RTD +
RTD -
RTD Compensating Lead
Relay Set 1
NO
Relay Set 1
C
Relay Set 1
NC
Relay Set 2
NO
Relay Set 2
C
Relay Set 2
NC
|
20
PIN
1
3
11
9
20
13
14
15
17
18
19 |
11PIN (Option E)
1
3
4
5
2
6
7
8
9
10
11
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