Precision Digital PD138 - Manual (Page 7)

PD138 Minimux
®
II Temp & Process Scanner Instruction Manual
7
SPECIFICATIONS
NUMBER OF
CHANNELS PER
MINIMUX
8 double-pole channels per unit
NUMBER OF
CHANNELS PER
SYSTEM
Unlimited
SIGNALS
SWITCHING
DPST reed relays
CONTACT
RESISTANCE
0.2
Ω maximum
MAXIMUM INPUT
VOTAGE
200 V (switched or common mode)
MAXIMUM
CURRENT
SWITCHED
0.5 A
MAXIMUM
POWER
SWITCHED
10 W
DWELL
TIME
Each channel adjustable from 0.6 to 30 seconds
NON-VOLATILE
MEMORY All programming values are stored in non-volatile
memory for ten years if power is lost
SCAN METHOD Internal or manually controlled
CHANNEL
INDICATION
Green LED on front panel
DISABLING
CHANNELS
Any channel may be disabled
SCAN STOP
The scan may be stopped by pressing and holding the
STOP/GO button for more than 0.5 seconds. The scan
may be resumed by pressing and releasing the STOP/GO
button quickly (less than 0.5 seconds)
ALARM INPUT
Independent alarm input for each channel. Input
Impedance; 25 Kohm, typical pull-up to 5 V
ALARM
SEQUENCE
Sequence A or Sequence F2A (First-Out)
ALARM OUTPUTS
Alarm condition indicated by:
1.
Front panel red LED for each channel.
2. Relay, 1 SPDT (form C); rated 2 A @ 30 VDC or 2 A
@ 250 VAC resistive load; 1/14 HP @ 125 / 250
VAC for inductive loads. For fail-safe operation, the
relay is energized in the non-alarm state. In the case
of a power failure, the relay will go to the alarm
state, (NC contact is connected to common).
3. Built-in horn, 85 dB.
4. Stop-on-alarmed-channel (user select)