Common Mode
Rejection Ratio
(CMRR):
120db
Sensor Break
Detection:
Sensor open for TC, RTD and mV
inputs, below 1mA for 4-10 mA input, below 0.25V
for 1-5V input, unavailable for other inputs
Sensor Break
Responding Time:
Within 4 seconds for TC, RTD and
mA inputs, 0.1 second for 4-20 mA and 1-5V inputs
Event Input
Logic Low
-10V minimum, 0.8V maximum
Logic High: 2V minimum, 0.8V maximum
Functions:
Remote reset, remote lockout
Output 1/ Output 2
Relay Rating: 2A/240VAC, life cycles 200,000 for
resistive load
Pulsed Voltage: Source Voltage 5V, current limiting
resistance 66 ohms
Triac (SSR) Output
Rating:
1A/240VAC
Inrush Current: 20A for 1 cycle
Min. Load Current:
50mA rms
Max.Off-state Leakage: 3mA rms
Max. On-state Voltage: 1.5V rms
Insulation Resistance: 1000 Mohms min. at 500VDC
Dielectric Strength: 2500VAC for 1 minute
DC Voltage Supply Characteristics
(Installed at Output 2)
Type
Tolerance
Max. Output
Ripple
Isolation
Current
Voltage
Barrier
20V
± 0.5V
25mA
0.2Vp-p
500VAC
12V
± 0.3V
40mA
0.1Vp-p
500VAC
5V
± 0.15V
80mA
0.05Vp-p
500VAC
Data Communications
Interface:
RS-485 (up to 247 units)
Protocol:
Modbus protocol RTU mode
Address:
1 - 247
Baud Rate:
0.3 ~ 38.4 Kbits/sec
Data Bits:
8 bits
Parity Bit:
None, Even or Odd
Stop Bit:
1 or 2 bits
Communication Buffer: 50 bytes
Environmental& Physical
Operating Temperature: -10°C to 50°C
Storage Temperature:
-40°C to 60°C
Humidity:
0 to 90% RH (non-condensing)
Insulation Resistance: 20 Mohms min. (at 500VDC)
Dielectric Strength: 2000VAC, 50/60Hz for 1minute
Vibration Resistance: 10 - 55Hz, 10m/s
2
for 2 hours
Shock Resistance:
200m/s
2
(20g)
Moldings:
Flame retardant Polycarbonate
Dimensions: 48mm(W) x 48mm(H) x 94mm(D),
86mm depth behind panel
Weight:
150 grams
Approval Standards
Safety:
UL873 (11
th
edition, 1994)
CSA C22.2 No. 24-93
EN61010-1 (IEC1010-1)
Protective Class:
IP30 front panel, indoor use
IP20 housing and terminals (with pro-
tective cover)
EMC:
EN61326
Related Products:
SNA10A—Smart Network Adapter for Third Party
Software. Converts 255 channels of RS-485 or
RS-422 to RS-232 Network
SNA10B—Smart Network Adapter for ETR-Net
Software. Converts 255 channels of RS-485 or
RS-422 to RS-232 Network
3
NON-VOLATILE MEMORY
• Retains process parameters when power is off
DISPLAY MODE
Indicates value being displayed:
• PV PROCESS VALUE
• HSP1 OUTPUT 1 HIGH LIMIT
SET POINT
• LSP1 OUTPUT 1 LOW LIMIT
SET POINT
• SP2 OUTPUT 2
TOUCH KEY, Sealed mylar front panel
• Splash and chemical resistant
• Tactile feedback, pressure sensitive buttons
FM APPROVED LIMIT CONTROL
• EASY OPERATION
• QUICK SET-UP
CONTROL LOCK
STATUS INDICATOR
STATUS INDICATORS
• OUTPUT 1
• OUTPUT 2
• °C
• °F