E-Stop Safety Module
– Models ES-UA-5A and ES-VA-5A
Supply Voltage and Current
A1-A: 115V ac (Model ES-UA-5A) or 230V ac (model ES-VA-5A), ± 15%; 50/60Hz
B1-B: 12-24V dc, ± 15%, 10% max. ripple
Power consumption: approx. 4W/7VA
Supply Protection Circuitry
Protected against transient voltages and reverse polarity
Output Configuration
Outputs (K1 & K2): four redundant (total of eight) safety relay (forced-guided) contacts – AgNi, 5 µm gold-plated,
plus 1 N/C Auxiliary Monitor output – AgNi, 5 µm gold-plated
Low Current Rating:
Caution: The 5 µm gold-plated contacts allow the switching of low current/low voltage. In these low-
power applications, multiple contacts can also be switched in series (e.g., “dry switching”).
To preserve the gold plating on the contacts, the following max. values should not be exceeded at any time:
Min. voltage: 1V ac/dc
Max. voltage: 60V
Min. current: 5 mA ac/dc
Max. current: 300 mA
Min. power: 5 mW (5 mVA)
Max. power: 7 W (7 VA)
High Current Rating:
If higher loads must be switched through one or more of the contacts, the minimum and maximum values of the
contact(s) changes to:
Min. voltage: 15V ac/dc
Max. voltage: 250V ac/dc
Min. current: 250 mA ac/dc
Max. current: 6 A
Min. power: 5 W (5 VA)
Max. power: 200 W (1500 VA)
Mechanical life: 50,000,000 operations
Electrical life: 150,000 operations (typical, @ 1,500 VA switched power, resistive load)
150,000 operations (typical, @ 200 W switched power, resistive load)
NOTE: Transient suppression is recommended when switching inductive loads. Install suppressors
across load. Never install suppressors across output contacts (see Warning, page 6).
Solid-State Monitor Outputs:
Two non-safety solid-state dc outputs
Output at Y32 monitors state of outputs – conducts (output high) when both K1 and K2 are energized
Output at Y35 conducts (output high) when internal power supply is OK
Output circuits require application of +12-24V dc ± 15% at terminal Y31; dc common at Y30
Maximum switching current: 100 mA at 12-24V dc
Both outputs are protected against short circuits
Output Response Time
25 milliseconds typical
Input Requirements
E-stop switch must have normally closed contacts each capable of switching 20 to 50mA @ 12 to 30V dc;
and must be open ≥ 10 ms for a valid stop command. Maximum input resistance 250 Ω per channel.
Reset switch must have one normally open contact capable of switching 20 to 50mA @ 12 to 30V dc.
On-Time Delay
100 ms; time from the E-stop contacts to close (Auto Reset) or the reset button to open (Manual Reset) and the
safety outputs to close.
Status Indicators
green LED indicators: Power ON, K1 energized, K2 energized
1 red LED indicator responds to fault of internal power supply, ground fault, or cross-short of input channels (see
“Troubleshooting” on back cover for LED condition descriptions).
Housing
Polycarbonate. Rated NEMA 1 (IEC IP20)
Mounting
Mounts to standard 35 mm DIN rail track. Safety Module must be installed inside an enclosure rated NEMA 3
(IEC IP54), or better.
Vibration Resistance
10 to 55Hz @ 0.35 mm displacement per IEC 68-2-6
Operating Conditions
Operating Temperature: 0° to +50° C (+32° to 122° F)
Maximum Relative Humidity: 90% @ +50° C (non-condensing)
Heat Dissipation Considerations: See page 5
Dimensions
See Figure 7, page 10
Certifications
Specifications
EMERGENCY STOP DEVICE
29YL
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